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• 7311. [Image] Sack of Troy; Volute krater; Vase F160

  	Pottery: red-figured volute-krater (bowl for mixing wine and water). Designs red on black ground, with white accessories. Round the lip, egg-moulding; underneath, laurel-wreaths. Above the design, on the ...
  	Citation × Citation Citation Abstract Copy Title: Sack of Troy; Volute krater; Vase F160 Pottery: red-figured volute-krater (bowl for mixing wine and water). Designs red on black ground, with white accessories. Round the lip, egg-moulding; underneath, laurel-wreaths. Above the design, on the neck, ivy-wreath; at the back of the neck, ivy-wreath and palmettes. Below the handles, palmettes; above each design on the body, tongue-pattern, and below all round, maeander and crosses. The handles terminate in swans' heads below, and above in female masks with rams' horns, in front white with black hair and yellow markings, at the back black throughout. On the neck in front : Dionysiac thiasos: In the centre is Dionysos moving rapidly to right, looking back; he is beardless, with long hair, wreath, bordered chlamys over left arm held up in right hand, thyrsos in left. On either side of him is a Maenad moving to right, with hair gathered in a bunch behind, earrings, necklace, bracelets, and long girt chiton; the one on the left has a thyrsos in right hand and a blazing torch in left; in front of her is a tendril. The other has a radiated ampyx, chiton over left shoulder, and a tympanon in left hand; she looks upwards, and before her is an altar, on which is a fruit. On the body: (a) Iliupersis: (1.) In the centre is represented Ajax seizing Cassandra: In front of a xoanon of Athene is an altar with wave-pattern on the cornice and imitation triglyphs and metopes in front; the statue looks to right and has long hair, high-crested helmet, long chiton with a stripe of chevrons down the front bordered by wave-patterns, girdle with white studs, aegis at back with snake-border, double-pointed spear couched in right hand, shield on left arm. On the altar is Cassandra, seated to left with face to front, clasping the statue with both hands; she has long dishevelled hair, necklace, bracelets, long girt bordered chiton over right shoulder, with apoptygma. On the right stands Ajax to left with right foot slightly raised, beardless, with curly hair, white high-crested helmet, bordered chlamys over left shoulder confined by a belt with white spots, sword slung at side, long spear in left hand; in right hand is his shield (device of four-spoked wheel in white on black, surrounded by a broad white band, outer rim of white dots), which he is laying down before seizing Cassandra. Below the altar is a prochoos lying on its side. On the right is Hecuba, or an aged priestess, running away and looking back, with white hair and eyebrows, double yellow fillet, sandals, long chiton and apoptygma reaching to the knees, embroidered down the front, and himation wrapped round her, right hand raised, left extended. (2.) On the left, the sacrifice of Polyxena is represented. Polyxena is fallen to right at the foot of the statue, clasping it with both arms; she has long dishevelled hair, necklace, bracelets, long girt chiton with a stripe down the side. Behind her is Odysseus running up to carry her off, with left hand extended to seize her; he is beardless, with white pilos, bordered chlamys fastened with a fibula in front, sword slung at side, long double-pointed spear in right hand. Above the scene on the left is Athene seated to right, with hair in a knot at the back tied with a double fillet, earrings, necklace, bracelets, aegis spotted white with snakes in front and radiated border with white zigzags, long chiton and apoptygma with border as the aegis, spear in right hand. Behind her is an Ionic column, round which is a string of large beads ending in tassels. (3.) Above are Anchises and Ascanios departing to right; Anchises is partly bald, with white hair, beard, and eyebrows, bordered embroidered himation over left arm, and staff in left hand; with right hand he leads Ascanios, who has a bordered himation over left arm. Behind them is a laurel-tree, and above are seen the segments of two shields, white with a border of dots. The ground-lines are indicated by white dots. (b) Departure of a warrior (?): In the centre is a beardless warrior to left with right foot raised on a rock, pilos, endromides, bordered himation over left shoulder, and spear in right hand; his left hand rests on his shield, which has a four-spoked wheel as device, with dots round the rim. Facing him is a beardless warrior with pilos slung at back, fillet, chlamys over his arms, endromides, spear in right hand, two fingers of left hand raised, as if addressing the other. Behind on a slightly higher level is a female figure to right with hair in a knot behind, embroidered opisthosphendone, earrings, necklace, bracelets, long girt chiton with apoptygma reaching to the hips, sandals, situla in right hand; in left hand she holds out phiale. Behind her hangs an embroidered taenia; above the warriors is seen part of a shield with device of an eight-point star and border of dots, and an open window with double shutter on which are rows of white spots. On the right is a youth seated to right looking, back, with fillet, drapery under him, and spear in left hand; on a higher level is a female figure to right looking back, with hair in a knot, earrings, necklace, bracelets, long girt chiton with apoptygma; with right hand she draws forward her drapery from behind. --The British Museum; default; Red-figure; Apulian (pottery style) Title: Sack of Troy; Volute krater; Vase F160 Pottery: red-figured volute-krater (bowl for mixing wine and water). Designs red on black ground, with white accessories. Round the lip, egg-moulding; underneath, laurel-wreaths. Above the design, on the neck, ivy-wreath; at the back of the neck, ivy-wreath and palmettes. Below the handles, palmettes; above each design on the body, tongue-pattern, and below all round, maeander and crosses. The handles terminate in swans' heads below, and above in female masks with rams' horns, in front white with black hair and yellow markings, at the back black throughout. On the neck in front : Dionysiac thiasos: In the centre is Dionysos moving rapidly to right, looking back; he is beardless, with long hair, wreath, bordered chlamys over left arm held up in right hand, thyrsos in left. On either side of him is a Maenad moving to right, with hair gathered in a bunch behind, earrings, necklace, bracelets, and long girt chiton; the one on the left has a thyrsos in right hand and a blazing torch in left; in front of her is a tendril. The other has a radiated ampyx, chiton over left shoulder, and a tympanon in left hand; she looks upwards, and before her is an altar, on which is a fruit. On the body: (a) Iliupersis: (1.) In the centre is represented Ajax seizing Cassandra: In front of a xoanon of Athene is an altar with wave-pattern on the cornice and imitation triglyphs and metopes in front; the statue looks to right and has long hair, high-crested helmet, long chiton with a stripe of chevrons down the front bordered by wave-patterns, girdle with white studs, aegis at back with snake-border, double-pointed spear couched in right hand, shield on left arm. On the altar is Cassandra, seated to left with face to front, clasping the statue with both hands; she has long dishevelled hair, necklace, bracelets, long girt bordered chiton over right shoulder, with apoptygma. On the right stands Ajax to left with right foot slightly raised, beardless, with curly hair, white high-crested helmet, bordered chlamys over left shoulder confined by a belt with white spots, sword slung at side, long spear in left hand; in right hand is his shield (device of four-spoked wheel in white on black, surrounded by a broad white band, outer rim of white dots), which he is laying down before seizing Cassandra. Below the altar is a prochoos lying on its side. On the right is Hecuba, or an aged priestess, running away and looking back, with white hair and eyebrows, double yellow fillet, sandals, long chiton and apoptygma reaching to the knees, embroidered down the front, and himation wrapped round her, right hand raised, left extended. (2.) On the left, the sacrifice of Polyxena is represented. Polyxena is fallen to right at the foot of the statue, clasping it with both arms; she has long dishevelled hair, necklace, bracelets, long girt chiton with a stripe down the side. Behind her is Odysseus running up to carry her off, with left hand extended to seize her; he is beardless, with white pilos, bordered chlamys fastened with a fibula in front, sword slung at side, long double-pointed spear in right hand. Above the scene on the left is Athene seated to right, with hair in a knot at the back tied with a double fillet, earrings, necklace, bracelets, aegis spotted white with snakes in front and radiated border with white zigzags, long chiton and apoptygma with border as the aegis, spear in right hand. Behind her is an Ionic column, round which is a string of large beads ending in tassels. (3.) Above are Anchises and Ascanios departing to right; Anchises is partly bald, with white hair, beard, and eyebrows, bordered embroidered himation over left arm, and staff in left hand; with right hand he leads Ascanios, who has a bordered himation over left arm. Behind them is a laurel-tree, and above are seen the segments of two shields, white with a border of dots. The ground-lines are indicated by white dots. (b) Departure of a warrior (?): In the centre is a beardless warrior to left with right foot raised on a rock, pilos, endromides, bordered himation over left shoulder, and spear in right hand; his left hand rests on his shield, which has a four-spoked wheel as device, with dots round the rim. Facing him is a beardless warrior with pilos slung at back, fillet, chlamys over his arms, endromides, spear in right hand, two fingers of left hand raised, as if addressing the other. Behind on a slightly higher level is a female figure to right with hair in a knot behind, embroidered opisthosphendone, earrings, necklace, bracelets, long girt chiton with apoptygma reaching to the hips, sandals, situla in right hand; in left hand she holds out phiale. Behind her hangs an embroidered taenia; above the warriors is seen part of a shield with device of an eight-point star and border of dots, and an open window with double shutter on which are rows of white spots. On the right is a youth seated to right looking, back, with fillet, drapery under him, and spear in left hand; on a higher level is a female figure to right looking back, with hair in a knot, earrings, necklace, bracelets, long girt chiton with apoptygma; with right hand she draws forward her drapery from behind. --The British Museum; default; Red-figure; Apulian (pottery style) Close

• 7312. [Image] Other side of Sack of Troy; Volute krater; Vase F160

  	Pottery: red-figured volute-krater (bowl for mixing wine and water). Designs red on black ground, with white accessories. Round the lip, egg-moulding; underneath, laurel-wreaths. Above the design, on the ...
  	Citation × Citation Citation Abstract Copy Title: Other side of Sack of Troy; Volute krater; Vase F160 Pottery: red-figured volute-krater (bowl for mixing wine and water). Designs red on black ground, with white accessories. Round the lip, egg-moulding; underneath, laurel-wreaths. Above the design, on the neck, ivy-wreath; at the back of the neck, ivy-wreath and palmettes. Below the handles, palmettes; above each design on the body, tongue-pattern, and below all round, maeander and crosses. The handles terminate in swans' heads below, and above in female masks with rams' horns, in front white with black hair and yellow markings, at the back black throughout. On the neck in front : Dionysiac thiasos: In the centre is Dionysos moving rapidly to right, looking back; he is beardless, with long hair, wreath, bordered chlamys over left arm held up in right hand, thyrsos in left. On either side of him is a Maenad moving to right, with hair gathered in a bunch behind, earrings, necklace, bracelets, and long girt chiton; the one on the left has a thyrsos in right hand and a blazing torch in left; in front of her is a tendril. The other has a radiated ampyx, chiton over left shoulder, and a tympanon in left hand; she looks upwards, and before her is an altar, on which is a fruit. On the body: (a) Iliupersis: (1.) In the centre is represented Ajax seizing Cassandra: In front of a xoanon of Athene is an altar with wave-pattern on the cornice and imitation triglyphs and metopes in front; the statue looks to right and has long hair, high-crested helmet, long chiton with a stripe of chevrons down the front bordered by wave-patterns, girdle with white studs, aegis at back with snake-border, double-pointed spear couched in right hand, shield on left arm. On the altar is Cassandra, seated to left with face to front, clasping the statue with both hands; she has long dishevelled hair, necklace, bracelets, long girt bordered chiton over right shoulder, with apoptygma. On the right stands Ajax to left with right foot slightly raised, beardless, with curly hair, white high-crested helmet, bordered chlamys over left shoulder confined by a belt with white spots, sword slung at side, long spear in left hand; in right hand is his shield (device of four-spoked wheel in white on black, surrounded by a broad white band, outer rim of white dots), which he is laying down before seizing Cassandra. Below the altar is a prochoos lying on its side. On the right is Hecuba, or an aged priestess, running away and looking back, with white hair and eyebrows, double yellow fillet, sandals, long chiton and apoptygma reaching to the knees, embroidered down the front, and himation wrapped round her, right hand raised, left extended. (2.) On the left, the sacrifice of Polyxena is represented. Polyxena is fallen to right at the foot of the statue, clasping it with both arms; she has long dishevelled hair, necklace, bracelets, long girt chiton with a stripe down the side. Behind her is Odysseus running up to carry her off, with left hand extended to seize her; he is beardless, with white pilos, bordered chlamys fastened with a fibula in front, sword slung at side, long double-pointed spear in right hand. Above the scene on the left is Athene seated to right, with hair in a knot at the back tied with a double fillet, earrings, necklace, bracelets, aegis spotted white with snakes in front and radiated border with white zigzags, long chiton and apoptygma with border as the aegis, spear in right hand. Behind her is an Ionic column, round which is a string of large beads ending in tassels. (3.) Above are Anchises and Ascanios departing to right; Anchises is partly bald, with white hair, beard, and eyebrows, bordered embroidered himation over left arm, and staff in left hand; with right hand he leads Ascanios, who has a bordered himation over left arm. Behind them is a laurel-tree, and above are seen the segments of two shields, white with a border of dots. The ground-lines are indicated by white dots. (b) Departure of a warrior (?): In the centre is a beardless warrior to left with right foot raised on a rock, pilos, endromides, bordered himation over left shoulder, and spear in right hand; his left hand rests on his shield, which has a four-spoked wheel as device, with dots round the rim. Facing him is a beardless warrior with pilos slung at back, fillet, chlamys over his arms, endromides, spear in right hand, two fingers of left hand raised, as if addressing the other. Behind on a slightly higher level is a female figure to right with hair in a knot behind, embroidered opisthosphendone, earrings, necklace, bracelets, long girt chiton with apoptygma reaching to the hips, sandals, situla in right hand; in left hand she holds out phiale. Behind her hangs an embroidered taenia; above the warriors is seen part of a shield with device of an eight-point star and border of dots, and an open window with double shutter on which are rows of white spots. On the right is a youth seated to right looking, back, with fillet, drapery under him, and spear in left hand; on a higher level is a female figure to right looking back, with hair in a knot, earrings, necklace, bracelets, long girt chiton with apoptygma; with right hand she draws forward her drapery from behind. --The British Museum; default; Red-figure; Apulian (pottery style) Title: Other side of Sack of Troy; Volute krater; Vase F160 Pottery: red-figured volute-krater (bowl for mixing wine and water). Designs red on black ground, with white accessories. Round the lip, egg-moulding; underneath, laurel-wreaths. Above the design, on the neck, ivy-wreath; at the back of the neck, ivy-wreath and palmettes. Below the handles, palmettes; above each design on the body, tongue-pattern, and below all round, maeander and crosses. The handles terminate in swans' heads below, and above in female masks with rams' horns, in front white with black hair and yellow markings, at the back black throughout. On the neck in front : Dionysiac thiasos: In the centre is Dionysos moving rapidly to right, looking back; he is beardless, with long hair, wreath, bordered chlamys over left arm held up in right hand, thyrsos in left. On either side of him is a Maenad moving to right, with hair gathered in a bunch behind, earrings, necklace, bracelets, and long girt chiton; the one on the left has a thyrsos in right hand and a blazing torch in left; in front of her is a tendril. The other has a radiated ampyx, chiton over left shoulder, and a tympanon in left hand; she looks upwards, and before her is an altar, on which is a fruit. On the body: (a) Iliupersis: (1.) In the centre is represented Ajax seizing Cassandra: In front of a xoanon of Athene is an altar with wave-pattern on the cornice and imitation triglyphs and metopes in front; the statue looks to right and has long hair, high-crested helmet, long chiton with a stripe of chevrons down the front bordered by wave-patterns, girdle with white studs, aegis at back with snake-border, double-pointed spear couched in right hand, shield on left arm. On the altar is Cassandra, seated to left with face to front, clasping the statue with both hands; she has long dishevelled hair, necklace, bracelets, long girt bordered chiton over right shoulder, with apoptygma. On the right stands Ajax to left with right foot slightly raised, beardless, with curly hair, white high-crested helmet, bordered chlamys over left shoulder confined by a belt with white spots, sword slung at side, long spear in left hand; in right hand is his shield (device of four-spoked wheel in white on black, surrounded by a broad white band, outer rim of white dots), which he is laying down before seizing Cassandra. Below the altar is a prochoos lying on its side. On the right is Hecuba, or an aged priestess, running away and looking back, with white hair and eyebrows, double yellow fillet, sandals, long chiton and apoptygma reaching to the knees, embroidered down the front, and himation wrapped round her, right hand raised, left extended. (2.) On the left, the sacrifice of Polyxena is represented. Polyxena is fallen to right at the foot of the statue, clasping it with both arms; she has long dishevelled hair, necklace, bracelets, long girt chiton with a stripe down the side. Behind her is Odysseus running up to carry her off, with left hand extended to seize her; he is beardless, with white pilos, bordered chlamys fastened with a fibula in front, sword slung at side, long double-pointed spear in right hand. Above the scene on the left is Athene seated to right, with hair in a knot at the back tied with a double fillet, earrings, necklace, bracelets, aegis spotted white with snakes in front and radiated border with white zigzags, long chiton and apoptygma with border as the aegis, spear in right hand. Behind her is an Ionic column, round which is a string of large beads ending in tassels. (3.) Above are Anchises and Ascanios departing to right; Anchises is partly bald, with white hair, beard, and eyebrows, bordered embroidered himation over left arm, and staff in left hand; with right hand he leads Ascanios, who has a bordered himation over left arm. Behind them is a laurel-tree, and above are seen the segments of two shields, white with a border of dots. The ground-lines are indicated by white dots. (b) Departure of a warrior (?): In the centre is a beardless warrior to left with right foot raised on a rock, pilos, endromides, bordered himation over left shoulder, and spear in right hand; his left hand rests on his shield, which has a four-spoked wheel as device, with dots round the rim. Facing him is a beardless warrior with pilos slung at back, fillet, chlamys over his arms, endromides, spear in right hand, two fingers of left hand raised, as if addressing the other. Behind on a slightly higher level is a female figure to right with hair in a knot behind, embroidered opisthosphendone, earrings, necklace, bracelets, long girt chiton with apoptygma reaching to the hips, sandals, situla in right hand; in left hand she holds out phiale. Behind her hangs an embroidered taenia; above the warriors is seen part of a shield with device of an eight-point star and border of dots, and an open window with double shutter on which are rows of white spots. On the right is a youth seated to right looking, back, with fillet, drapery under him, and spear in left hand; on a higher level is a female figure to right looking back, with hair in a knot, earrings, necklace, bracelets, long girt chiton with apoptygma; with right hand she draws forward her drapery from behind. --The British Museum; default; Red-figure; Apulian (pottery style) Close

• 7313. [Image] Sack of Troy; Volute krater; Vase F160

  	Pottery: red-figured volute-krater (bowl for mixing wine and water). Designs red on black ground, with white accessories. Round the lip, egg-moulding; underneath, laurel-wreaths. Above the design, on the ...
  	Citation × Citation Citation Abstract Copy Title: Sack of Troy; Volute krater; Vase F160 Pottery: red-figured volute-krater (bowl for mixing wine and water). Designs red on black ground, with white accessories. Round the lip, egg-moulding; underneath, laurel-wreaths. Above the design, on the neck, ivy-wreath; at the back of the neck, ivy-wreath and palmettes. Below the handles, palmettes; above each design on the body, tongue-pattern, and below all round, maeander and crosses. The handles terminate in swans' heads below, and above in female masks with rams' horns, in front white with black hair and yellow markings, at the back black throughout. On the neck in front : Dionysiac thiasos: In the centre is Dionysos moving rapidly to right, looking back; he is beardless, with long hair, wreath, bordered chlamys over left arm held up in right hand, thyrsos in left. On either side of him is a Maenad moving to right, with hair gathered in a bunch behind, earrings, necklace, bracelets, and long girt chiton; the one on the left has a thyrsos in right hand and a blazing torch in left; in front of her is a tendril. The other has a radiated ampyx, chiton over left shoulder, and a tympanon in left hand; she looks upwards, and before her is an altar, on which is a fruit. On the body: (a) Iliupersis: (1.) In the centre is represented Ajax seizing Cassandra: In front of a xoanon of Athene is an altar with wave-pattern on the cornice and imitation triglyphs and metopes in front; the statue looks to right and has long hair, high-crested helmet, long chiton with a stripe of chevrons down the front bordered by wave-patterns, girdle with white studs, aegis at back with snake-border, double-pointed spear couched in right hand, shield on left arm. On the altar is Cassandra, seated to left with face to front, clasping the statue with both hands; she has long dishevelled hair, necklace, bracelets, long girt bordered chiton over right shoulder, with apoptygma. On the right stands Ajax to left with right foot slightly raised, beardless, with curly hair, white high-crested helmet, bordered chlamys over left shoulder confined by a belt with white spots, sword slung at side, long spear in left hand; in right hand is his shield (device of four-spoked wheel in white on black, surrounded by a broad white band, outer rim of white dots), which he is laying down before seizing Cassandra. Below the altar is a prochoos lying on its side. On the right is Hecuba, or an aged priestess, running away and looking back, with white hair and eyebrows, double yellow fillet, sandals, long chiton and apoptygma reaching to the knees, embroidered down the front, and himation wrapped round her, right hand raised, left extended. (2.) On the left, the sacrifice of Polyxena is represented. Polyxena is fallen to right at the foot of the statue, clasping it with both arms; she has long dishevelled hair, necklace, bracelets, long girt chiton with a stripe down the side. Behind her is Odysseus running up to carry her off, with left hand extended to seize her; he is beardless, with white pilos, bordered chlamys fastened with a fibula in front, sword slung at side, long double-pointed spear in right hand. Above the scene on the left is Athene seated to right, with hair in a knot at the back tied with a double fillet, earrings, necklace, bracelets, aegis spotted white with snakes in front and radiated border with white zigzags, long chiton and apoptygma with border as the aegis, spear in right hand. Behind her is an Ionic column, round which is a string of large beads ending in tassels. (3.) Above are Anchises and Ascanios departing to right; Anchises is partly bald, with white hair, beard, and eyebrows, bordered embroidered himation over left arm, and staff in left hand; with right hand he leads Ascanios, who has a bordered himation over left arm. Behind them is a laurel-tree, and above are seen the segments of two shields, white with a border of dots. The ground-lines are indicated by white dots. (b) Departure of a warrior (?): In the centre is a beardless warrior to left with right foot raised on a rock, pilos, endromides, bordered himation over left shoulder, and spear in right hand; his left hand rests on his shield, which has a four-spoked wheel as device, with dots round the rim. Facing him is a beardless warrior with pilos slung at back, fillet, chlamys over his arms, endromides, spear in right hand, two fingers of left hand raised, as if addressing the other. Behind on a slightly higher level is a female figure to right with hair in a knot behind, embroidered opisthosphendone, earrings, necklace, bracelets, long girt chiton with apoptygma reaching to the hips, sandals, situla in right hand; in left hand she holds out phiale. Behind her hangs an embroidered taenia; above the warriors is seen part of a shield with device of an eight-point star and border of dots, and an open window with double shutter on which are rows of white spots. On the right is a youth seated to right looking, back, with fillet, drapery under him, and spear in left hand; on a higher level is a female figure to right looking back, with hair in a knot, earrings, necklace, bracelets, long girt chiton with apoptygma; with right hand she draws forward her drapery from behind. --The British Museum; default; Red-figure; Apulian (pottery style) Title: Sack of Troy; Volute krater; Vase F160 Pottery: red-figured volute-krater (bowl for mixing wine and water). Designs red on black ground, with white accessories. Round the lip, egg-moulding; underneath, laurel-wreaths. Above the design, on the neck, ivy-wreath; at the back of the neck, ivy-wreath and palmettes. Below the handles, palmettes; above each design on the body, tongue-pattern, and below all round, maeander and crosses. The handles terminate in swans' heads below, and above in female masks with rams' horns, in front white with black hair and yellow markings, at the back black throughout. On the neck in front : Dionysiac thiasos: In the centre is Dionysos moving rapidly to right, looking back; he is beardless, with long hair, wreath, bordered chlamys over left arm held up in right hand, thyrsos in left. On either side of him is a Maenad moving to right, with hair gathered in a bunch behind, earrings, necklace, bracelets, and long girt chiton; the one on the left has a thyrsos in right hand and a blazing torch in left; in front of her is a tendril. The other has a radiated ampyx, chiton over left shoulder, and a tympanon in left hand; she looks upwards, and before her is an altar, on which is a fruit. On the body: (a) Iliupersis: (1.) In the centre is represented Ajax seizing Cassandra: In front of a xoanon of Athene is an altar with wave-pattern on the cornice and imitation triglyphs and metopes in front; the statue looks to right and has long hair, high-crested helmet, long chiton with a stripe of chevrons down the front bordered by wave-patterns, girdle with white studs, aegis at back with snake-border, double-pointed spear couched in right hand, shield on left arm. On the altar is Cassandra, seated to left with face to front, clasping the statue with both hands; she has long dishevelled hair, necklace, bracelets, long girt bordered chiton over right shoulder, with apoptygma. On the right stands Ajax to left with right foot slightly raised, beardless, with curly hair, white high-crested helmet, bordered chlamys over left shoulder confined by a belt with white spots, sword slung at side, long spear in left hand; in right hand is his shield (device of four-spoked wheel in white on black, surrounded by a broad white band, outer rim of white dots), which he is laying down before seizing Cassandra. Below the altar is a prochoos lying on its side. On the right is Hecuba, or an aged priestess, running away and looking back, with white hair and eyebrows, double yellow fillet, sandals, long chiton and apoptygma reaching to the knees, embroidered down the front, and himation wrapped round her, right hand raised, left extended. (2.) On the left, the sacrifice of Polyxena is represented. Polyxena is fallen to right at the foot of the statue, clasping it with both arms; she has long dishevelled hair, necklace, bracelets, long girt chiton with a stripe down the side. Behind her is Odysseus running up to carry her off, with left hand extended to seize her; he is beardless, with white pilos, bordered chlamys fastened with a fibula in front, sword slung at side, long double-pointed spear in right hand. Above the scene on the left is Athene seated to right, with hair in a knot at the back tied with a double fillet, earrings, necklace, bracelets, aegis spotted white with snakes in front and radiated border with white zigzags, long chiton and apoptygma with border as the aegis, spear in right hand. Behind her is an Ionic column, round which is a string of large beads ending in tassels. (3.) Above are Anchises and Ascanios departing to right; Anchises is partly bald, with white hair, beard, and eyebrows, bordered embroidered himation over left arm, and staff in left hand; with right hand he leads Ascanios, who has a bordered himation over left arm. Behind them is a laurel-tree, and above are seen the segments of two shields, white with a border of dots. The ground-lines are indicated by white dots. (b) Departure of a warrior (?): In the centre is a beardless warrior to left with right foot raised on a rock, pilos, endromides, bordered himation over left shoulder, and spear in right hand; his left hand rests on his shield, which has a four-spoked wheel as device, with dots round the rim. Facing him is a beardless warrior with pilos slung at back, fillet, chlamys over his arms, endromides, spear in right hand, two fingers of left hand raised, as if addressing the other. Behind on a slightly higher level is a female figure to right with hair in a knot behind, embroidered opisthosphendone, earrings, necklace, bracelets, long girt chiton with apoptygma reaching to the hips, sandals, situla in right hand; in left hand she holds out phiale. Behind her hangs an embroidered taenia; above the warriors is seen part of a shield with device of an eight-point star and border of dots, and an open window with double shutter on which are rows of white spots. On the right is a youth seated to right looking, back, with fillet, drapery under him, and spear in left hand; on a higher level is a female figure to right looking back, with hair in a knot, earrings, necklace, bracelets, long girt chiton with apoptygma; with right hand she draws forward her drapery from behind. --The British Museum; default; Red-figure; Apulian (pottery style) Close

• 7314. [Image] Iphigenia; Volute krater; Vase F160

  	Pottery: red-figured volute-krater (bowl for mixing wine and water). Designs red on black ground, with white accessories. Round the lip, egg-moulding; underneath, laurel-wreaths. Above the design, on the ...
  	Citation × Citation Citation Abstract Copy Title: Iphigenia; Volute krater; Vase F160 Pottery: red-figured volute-krater (bowl for mixing wine and water). Designs red on black ground, with white accessories. Round the lip, egg-moulding; underneath, laurel-wreaths. Above the design, on the neck, ivy-wreath; at the back of the neck, ivy-wreath and palmettes. Below the handles, palmettes; above each design on the body, tongue-pattern, and below all round, maeander and crosses. The handles terminate in swans' heads below, and above in female masks with rams' horns, in front white with black hair and yellow markings, at the back black throughout. On the neck in front : Dionysiac thiasos: In the centre is Dionysos moving rapidly to right, looking back; he is beardless, with long hair, wreath, bordered chlamys over left arm held up in right hand, thyrsos in left. On either side of him is a Maenad moving to right, with hair gathered in a bunch behind, earrings, necklace, bracelets, and long girt chiton; the one on the left has a thyrsos in right hand and a blazing torch in left; in front of her is a tendril. The other has a radiated ampyx, chiton over left shoulder, and a tympanon in left hand; she looks upwards, and before her is an altar, on which is a fruit. On the body: (a) Iliupersis: (1.) In the centre is represented Ajax seizing Cassandra: In front of a xoanon of Athene is an altar with wave-pattern on the cornice and imitation triglyphs and metopes in front; the statue looks to right and has long hair, high-crested helmet, long chiton with a stripe of chevrons down the front bordered by wave-patterns, girdle with white studs, aegis at back with snake-border, double-pointed spear couched in right hand, shield on left arm. On the altar is Cassandra, seated to left with face to front, clasping the statue with both hands; she has long dishevelled hair, necklace, bracelets, long girt bordered chiton over right shoulder, with apoptygma. On the right stands Ajax to left with right foot slightly raised, beardless, with curly hair, white high-crested helmet, bordered chlamys over left shoulder confined by a belt with white spots, sword slung at side, long spear in left hand; in right hand is his shield (device of four-spoked wheel in white on black, surrounded by a broad white band, outer rim of white dots), which he is laying down before seizing Cassandra. Below the altar is a prochoos lying on its side. On the right is Hecuba, or an aged priestess, running away and looking back, with white hair and eyebrows, double yellow fillet, sandals, long chiton and apoptygma reaching to the knees, embroidered down the front, and himation wrapped round her, right hand raised, left extended. (2.) On the left, the sacrifice of Polyxena is represented. Polyxena is fallen to right at the foot of the statue, clasping it with both arms; she has long dishevelled hair, necklace, bracelets, long girt chiton with a stripe down the side. Behind her is Odysseus running up to carry her off, with left hand extended to seize her; he is beardless, with white pilos, bordered chlamys fastened with a fibula in front, sword slung at side, long double-pointed spear in right hand. Above the scene on the left is Athene seated to right, with hair in a knot at the back tied with a double fillet, earrings, necklace, bracelets, aegis spotted white with snakes in front and radiated border with white zigzags, long chiton and apoptygma with border as the aegis, spear in right hand. Behind her is an Ionic column, round which is a string of large beads ending in tassels. (3.) Above are Anchises and Ascanios departing to right; Anchises is partly bald, with white hair, beard, and eyebrows, bordered embroidered himation over left arm, and staff in left hand; with right hand he leads Ascanios, who has a bordered himation over left arm. Behind them is a laurel-tree, and above are seen the segments of two shields, white with a border of dots. The ground-lines are indicated by white dots. (b) Departure of a warrior (?): In the centre is a beardless warrior to left with right foot raised on a rock, pilos, endromides, bordered himation over left shoulder, and spear in right hand; his left hand rests on his shield, which has a four-spoked wheel as device, with dots round the rim. Facing him is a beardless warrior with pilos slung at back, fillet, chlamys over his arms, endromides, spear in right hand, two fingers of left hand raised, as if addressing the other. Behind on a slightly higher level is a female figure to right with hair in a knot behind, embroidered opisthosphendone, earrings, necklace, bracelets, long girt chiton with apoptygma reaching to the hips, sandals, situla in right hand; in left hand she holds out phiale. Behind her hangs an embroidered taenia; above the warriors is seen part of a shield with device of an eight-point star and border of dots, and an open window with double shutter on which are rows of white spots. On the right is a youth seated to right looking, back, with fillet, drapery under him, and spear in left hand; on a higher level is a female figure to right looking back, with hair in a knot, earrings, necklace, bracelets, long girt chiton with apoptygma; with right hand she draws forward her drapery from behind. --The British Museum; default; Red-figure; Apulian (pottery style) Title: Iphigenia; Volute krater; Vase F160 Pottery: red-figured volute-krater (bowl for mixing wine and water). Designs red on black ground, with white accessories. Round the lip, egg-moulding; underneath, laurel-wreaths. Above the design, on the neck, ivy-wreath; at the back of the neck, ivy-wreath and palmettes. Below the handles, palmettes; above each design on the body, tongue-pattern, and below all round, maeander and crosses. The handles terminate in swans' heads below, and above in female masks with rams' horns, in front white with black hair and yellow markings, at the back black throughout. On the neck in front : Dionysiac thiasos: In the centre is Dionysos moving rapidly to right, looking back; he is beardless, with long hair, wreath, bordered chlamys over left arm held up in right hand, thyrsos in left. On either side of him is a Maenad moving to right, with hair gathered in a bunch behind, earrings, necklace, bracelets, and long girt chiton; the one on the left has a thyrsos in right hand and a blazing torch in left; in front of her is a tendril. The other has a radiated ampyx, chiton over left shoulder, and a tympanon in left hand; she looks upwards, and before her is an altar, on which is a fruit. On the body: (a) Iliupersis: (1.) In the centre is represented Ajax seizing Cassandra: In front of a xoanon of Athene is an altar with wave-pattern on the cornice and imitation triglyphs and metopes in front; the statue looks to right and has long hair, high-crested helmet, long chiton with a stripe of chevrons down the front bordered by wave-patterns, girdle with white studs, aegis at back with snake-border, double-pointed spear couched in right hand, shield on left arm. On the altar is Cassandra, seated to left with face to front, clasping the statue with both hands; she has long dishevelled hair, necklace, bracelets, long girt bordered chiton over right shoulder, with apoptygma. On the right stands Ajax to left with right foot slightly raised, beardless, with curly hair, white high-crested helmet, bordered chlamys over left shoulder confined by a belt with white spots, sword slung at side, long spear in left hand; in right hand is his shield (device of four-spoked wheel in white on black, surrounded by a broad white band, outer rim of white dots), which he is laying down before seizing Cassandra. Below the altar is a prochoos lying on its side. On the right is Hecuba, or an aged priestess, running away and looking back, with white hair and eyebrows, double yellow fillet, sandals, long chiton and apoptygma reaching to the knees, embroidered down the front, and himation wrapped round her, right hand raised, left extended. (2.) On the left, the sacrifice of Polyxena is represented. Polyxena is fallen to right at the foot of the statue, clasping it with both arms; she has long dishevelled hair, necklace, bracelets, long girt chiton with a stripe down the side. Behind her is Odysseus running up to carry her off, with left hand extended to seize her; he is beardless, with white pilos, bordered chlamys fastened with a fibula in front, sword slung at side, long double-pointed spear in right hand. Above the scene on the left is Athene seated to right, with hair in a knot at the back tied with a double fillet, earrings, necklace, bracelets, aegis spotted white with snakes in front and radiated border with white zigzags, long chiton and apoptygma with border as the aegis, spear in right hand. Behind her is an Ionic column, round which is a string of large beads ending in tassels. (3.) Above are Anchises and Ascanios departing to right; Anchises is partly bald, with white hair, beard, and eyebrows, bordered embroidered himation over left arm, and staff in left hand; with right hand he leads Ascanios, who has a bordered himation over left arm. Behind them is a laurel-tree, and above are seen the segments of two shields, white with a border of dots. The ground-lines are indicated by white dots. (b) Departure of a warrior (?): In the centre is a beardless warrior to left with right foot raised on a rock, pilos, endromides, bordered himation over left shoulder, and spear in right hand; his left hand rests on his shield, which has a four-spoked wheel as device, with dots round the rim. Facing him is a beardless warrior with pilos slung at back, fillet, chlamys over his arms, endromides, spear in right hand, two fingers of left hand raised, as if addressing the other. Behind on a slightly higher level is a female figure to right with hair in a knot behind, embroidered opisthosphendone, earrings, necklace, bracelets, long girt chiton with apoptygma reaching to the hips, sandals, situla in right hand; in left hand she holds out phiale. Behind her hangs an embroidered taenia; above the warriors is seen part of a shield with device of an eight-point star and border of dots, and an open window with double shutter on which are rows of white spots. On the right is a youth seated to right looking, back, with fillet, drapery under him, and spear in left hand; on a higher level is a female figure to right looking back, with hair in a knot, earrings, necklace, bracelets, long girt chiton with apoptygma; with right hand she draws forward her drapery from behind. --The British Museum; default; Red-figure; Apulian (pottery style) Close

• 7315. [Image] Sack of Troy; Volute krater; Vase F160

  	Pottery: red-figured volute-krater (bowl for mixing wine and water). Designs red on black ground, with white accessories. Round the lip, egg-moulding; underneath, laurel-wreaths. Above the design, on the ...
  	Citation × Citation Citation Abstract Copy Title: Sack of Troy; Volute krater; Vase F160 Pottery: red-figured volute-krater (bowl for mixing wine and water). Designs red on black ground, with white accessories. Round the lip, egg-moulding; underneath, laurel-wreaths. Above the design, on the neck, ivy-wreath; at the back of the neck, ivy-wreath and palmettes. Below the handles, palmettes; above each design on the body, tongue-pattern, and below all round, maeander and crosses. The handles terminate in swans' heads below, and above in female masks with rams' horns, in front white with black hair and yellow markings, at the back black throughout. On the neck in front : Dionysiac thiasos: In the centre is Dionysos moving rapidly to right, looking back; he is beardless, with long hair, wreath, bordered chlamys over left arm held up in right hand, thyrsos in left. On either side of him is a Maenad moving to right, with hair gathered in a bunch behind, earrings, necklace, bracelets, and long girt chiton; the one on the left has a thyrsos in right hand and a blazing torch in left; in front of her is a tendril. The other has a radiated ampyx, chiton over left shoulder, and a tympanon in left hand; she looks upwards, and before her is an altar, on which is a fruit. On the body: (a) Iliupersis: (1.) In the centre is represented Ajax seizing Cassandra: In front of a xoanon of Athene is an altar with wave-pattern on the cornice and imitation triglyphs and metopes in front; the statue looks to right and has long hair, high-crested helmet, long chiton with a stripe of chevrons down the front bordered by wave-patterns, girdle with white studs, aegis at back with snake-border, double-pointed spear couched in right hand, shield on left arm. On the altar is Cassandra, seated to left with face to front, clasping the statue with both hands; she has long dishevelled hair, necklace, bracelets, long girt bordered chiton over right shoulder, with apoptygma. On the right stands Ajax to left with right foot slightly raised, beardless, with curly hair, white high-crested helmet, bordered chlamys over left shoulder confined by a belt with white spots, sword slung at side, long spear in left hand; in right hand is his shield (device of four-spoked wheel in white on black, surrounded by a broad white band, outer rim of white dots), which he is laying down before seizing Cassandra. Below the altar is a prochoos lying on its side. On the right is Hecuba, or an aged priestess, running away and looking back, with white hair and eyebrows, double yellow fillet, sandals, long chiton and apoptygma reaching to the knees, embroidered down the front, and himation wrapped round her, right hand raised, left extended. (2.) On the left, the sacrifice of Polyxena is represented. Polyxena is fallen to right at the foot of the statue, clasping it with both arms; she has long dishevelled hair, necklace, bracelets, long girt chiton with a stripe down the side. Behind her is Odysseus running up to carry her off, with left hand extended to seize her; he is beardless, with white pilos, bordered chlamys fastened with a fibula in front, sword slung at side, long double-pointed spear in right hand. Above the scene on the left is Athene seated to right, with hair in a knot at the back tied with a double fillet, earrings, necklace, bracelets, aegis spotted white with snakes in front and radiated border with white zigzags, long chiton and apoptygma with border as the aegis, spear in right hand. Behind her is an Ionic column, round which is a string of large beads ending in tassels. (3.) Above are Anchises and Ascanios departing to right; Anchises is partly bald, with white hair, beard, and eyebrows, bordered embroidered himation over left arm, and staff in left hand; with right hand he leads Ascanios, who has a bordered himation over left arm. Behind them is a laurel-tree, and above are seen the segments of two shields, white with a border of dots. The ground-lines are indicated by white dots. (b) Departure of a warrior (?): In the centre is a beardless warrior to left with right foot raised on a rock, pilos, endromides, bordered himation over left shoulder, and spear in right hand; his left hand rests on his shield, which has a four-spoked wheel as device, with dots round the rim. Facing him is a beardless warrior with pilos slung at back, fillet, chlamys over his arms, endromides, spear in right hand, two fingers of left hand raised, as if addressing the other. Behind on a slightly higher level is a female figure to right with hair in a knot behind, embroidered opisthosphendone, earrings, necklace, bracelets, long girt chiton with apoptygma reaching to the hips, sandals, situla in right hand; in left hand she holds out phiale. Behind her hangs an embroidered taenia; above the warriors is seen part of a shield with device of an eight-point star and border of dots, and an open window with double shutter on which are rows of white spots. On the right is a youth seated to right looking, back, with fillet, drapery under him, and spear in left hand; on a higher level is a female figure to right looking back, with hair in a knot, earrings, necklace, bracelets, long girt chiton with apoptygma; with right hand she draws forward her drapery from behind. --The British Museum; default; Red-figure; Apulian (pottery style) Title: Sack of Troy; Volute krater; Vase F160 Pottery: red-figured volute-krater (bowl for mixing wine and water). Designs red on black ground, with white accessories. Round the lip, egg-moulding; underneath, laurel-wreaths. Above the design, on the neck, ivy-wreath; at the back of the neck, ivy-wreath and palmettes. Below the handles, palmettes; above each design on the body, tongue-pattern, and below all round, maeander and crosses. The handles terminate in swans' heads below, and above in female masks with rams' horns, in front white with black hair and yellow markings, at the back black throughout. On the neck in front : Dionysiac thiasos: In the centre is Dionysos moving rapidly to right, looking back; he is beardless, with long hair, wreath, bordered chlamys over left arm held up in right hand, thyrsos in left. On either side of him is a Maenad moving to right, with hair gathered in a bunch behind, earrings, necklace, bracelets, and long girt chiton; the one on the left has a thyrsos in right hand and a blazing torch in left; in front of her is a tendril. The other has a radiated ampyx, chiton over left shoulder, and a tympanon in left hand; she looks upwards, and before her is an altar, on which is a fruit. On the body: (a) Iliupersis: (1.) In the centre is represented Ajax seizing Cassandra: In front of a xoanon of Athene is an altar with wave-pattern on the cornice and imitation triglyphs and metopes in front; the statue looks to right and has long hair, high-crested helmet, long chiton with a stripe of chevrons down the front bordered by wave-patterns, girdle with white studs, aegis at back with snake-border, double-pointed spear couched in right hand, shield on left arm. On the altar is Cassandra, seated to left with face to front, clasping the statue with both hands; she has long dishevelled hair, necklace, bracelets, long girt bordered chiton over right shoulder, with apoptygma. On the right stands Ajax to left with right foot slightly raised, beardless, with curly hair, white high-crested helmet, bordered chlamys over left shoulder confined by a belt with white spots, sword slung at side, long spear in left hand; in right hand is his shield (device of four-spoked wheel in white on black, surrounded by a broad white band, outer rim of white dots), which he is laying down before seizing Cassandra. Below the altar is a prochoos lying on its side. On the right is Hecuba, or an aged priestess, running away and looking back, with white hair and eyebrows, double yellow fillet, sandals, long chiton and apoptygma reaching to the knees, embroidered down the front, and himation wrapped round her, right hand raised, left extended. (2.) On the left, the sacrifice of Polyxena is represented. Polyxena is fallen to right at the foot of the statue, clasping it with both arms; she has long dishevelled hair, necklace, bracelets, long girt chiton with a stripe down the side. Behind her is Odysseus running up to carry her off, with left hand extended to seize her; he is beardless, with white pilos, bordered chlamys fastened with a fibula in front, sword slung at side, long double-pointed spear in right hand. Above the scene on the left is Athene seated to right, with hair in a knot at the back tied with a double fillet, earrings, necklace, bracelets, aegis spotted white with snakes in front and radiated border with white zigzags, long chiton and apoptygma with border as the aegis, spear in right hand. Behind her is an Ionic column, round which is a string of large beads ending in tassels. (3.) Above are Anchises and Ascanios departing to right; Anchises is partly bald, with white hair, beard, and eyebrows, bordered embroidered himation over left arm, and staff in left hand; with right hand he leads Ascanios, who has a bordered himation over left arm. Behind them is a laurel-tree, and above are seen the segments of two shields, white with a border of dots. The ground-lines are indicated by white dots. (b) Departure of a warrior (?): In the centre is a beardless warrior to left with right foot raised on a rock, pilos, endromides, bordered himation over left shoulder, and spear in right hand; his left hand rests on his shield, which has a four-spoked wheel as device, with dots round the rim. Facing him is a beardless warrior with pilos slung at back, fillet, chlamys over his arms, endromides, spear in right hand, two fingers of left hand raised, as if addressing the other. Behind on a slightly higher level is a female figure to right with hair in a knot behind, embroidered opisthosphendone, earrings, necklace, bracelets, long girt chiton with apoptygma reaching to the hips, sandals, situla in right hand; in left hand she holds out phiale. Behind her hangs an embroidered taenia; above the warriors is seen part of a shield with device of an eight-point star and border of dots, and an open window with double shutter on which are rows of white spots. On the right is a youth seated to right looking, back, with fillet, drapery under him, and spear in left hand; on a higher level is a female figure to right looking back, with hair in a knot, earrings, necklace, bracelets, long girt chiton with apoptygma; with right hand she draws forward her drapery from behind. --The British Museum; default; Red-figure; Apulian (pottery style) Close

• 7316. [Article] Constraints to urban park visitation: Conceptual connections and spatial attributes for traditionally well-served and underserved residents

  Connecting with nature is associated with social, physical, and emotional benefits such as stress relief, improved physical health, and lower crime. Parks and other natural areas offer spaces in which ...

  Citation × Citation Citation Abstract Copy Title: Constraints to urban park visitation: Conceptual connections and spatial attributes for traditionally well-served and underserved residents Author: Rushing, Jaclyn R. Connecting with nature is associated with social, physical, and emotional benefits such as stress relief, improved physical health, and lower crime. Parks and other natural areas offer spaces in which to connect with nature and reap these and other benefits (e.g., family bonding, social events, learning). Despite increasing populations of racial and ethnic minorities in the United States of America, these groups are underrepresented in many outdoor recreation activities and in visitation to many parks and other protected areas. This underrepresentation and other attributes of park visitation can be partially explained through the theoretical lens of constraints to recreation. Constraints are factors that limit participation, affect leisure preferences, and / or reduce enjoyment and satisfaction with recreation experiences. Examples of constraints include inability to afford park fees, fear of crime in parks, and lack of available leisure time. This thesis contains two standalone articles focusing on resident constraints to visiting urban parks and other natural areas in the Portland, Oregon (USA) metropolitan region. These articles examine: (a) the most common constraints to visiting these parks and natural areas, and whether these constraints vary between traditionally well-served (i.e., white majority residents) and underserved (i.e., ethnic and racial minorities) populations; (b) relationships among constraints, park visitation, and place attachment for both of these groups of residents; and (c) how constraints groups, different types of constraints, and resident characteristics (e.g., minorities) are distributed spatially across this metropolitan region. Data were obtained from mail and online questionnaires completed by two samples of residents in Clackamas, Multnomah, and Washington counties: (a) a proportionate random sample of residents mostly targeting the following groups: African Americans / Blacks, American Indians, Asians, Hispanics / Latinos, Middle Eastern peoples, and Slavic / Eastern European peoples (i.e., probability sample); and (b) a convenience sample of Opt-In panel members (i.e., nonprobability sample). Questionnaires were completed by a total of 3,328 residents across these samples, and the data were weighted by the most recent Census based on county, age, sex (male, female), and education to be representative of adult residents in this region. Race and other demographics were consistent with the Census after weighting. Results of the first article showed that the primary constraints to visiting parks and natural areas in this urban region were being too busy to visit, limited knowledge about Metro parks, and lack of access to these places (Metro parks are managed by Metro, which is the main regional government for Clackamas, Multnomah, and Washington counties). There were no differences in these constraints and most other constraints between traditionally underserved and well-served populations. Traditionally underserved residents, however, were significantly more constrained than the well-served residents were by race and cultural issues at parks, as well as lack of facilities and services at Metro parks. Traditionally well-served residents visited all parks and natural areas in the region significantly more often than did the underserved residents, but there were no differences in visitation to Metro parks or their favorite park. There were also no differences between the two groups in their attachment to their favorite park. Constraints and visitation explained 15% of the variance in attachment for well-served residents and 38% for underserved residents, and constraints explained 4% of the variance in visitation for well-served residents and 26% for underserved residents. The strongest negative predictor of attachment for well-served residents was Metro parks are not the best places, followed by limited access to these places and disinterest in visiting parks and natural areas. The strongest positive predictor for well-served resident attachment was frequency of visitation, followed by race and cultural issues at Metro parks, and lack of facilities and services in these areas. For underserved residents, the strongest negative predictor of attachment was costs followed by Metro parks are not the best places and limited knowledge about these places. Positive predictors of attachment for these residents included frequency of visitation and lack of facilities and services at Metro parks. The only predictor of visitation to their favorite park for well-served residents was fear of visiting other areas (positive relationship), whereas visitation for underserved residents was negatively associated with limited access to Metro parks and positively associated with costs of visiting other areas. The second article used a Geographic Information System (GIS) and hot spot analysis of the survey data to determine any spatial patterns in constraints groups, different types of constraints, and resident characteristics (e.g., minorities). Results revealed two major trends: (a) in the northeast area of the region, there is a clustering of minority residents overlapping with the most constrained hot spots and these residents were most affected by constraints associated with health and lack of recreation partners; and (b) residents in the southwest area of the region were most affected by constraints associated with limited knowledge and access to parks. Specific implications of these results for both management and research are discussed in this thesis. In general, however, these results may inform local agency objectives associated with reaching and engaging various populations, including ethnic and racial minorities. These findings also contribute to the literature by exploring relationships among constraints, park visitation, and attachment between traditionally well-served and underserved populations, and also by applying a GIS analysis of survey data to understand spatial aspects of constraints for each of these populations. Title: Constraints to urban park visitation: Conceptual connections and spatial attributes for traditionally well-served and underserved residents Author: Rushing, Jaclyn R. Connecting with nature is associated with social, physical, and emotional benefits such as stress relief, improved physical health, and lower crime. Parks and other natural areas offer spaces in which to connect with nature and reap these and other benefits (e.g., family bonding, social events, learning). Despite increasing populations of racial and ethnic minorities in the United States of America, these groups are underrepresented in many outdoor recreation activities and in visitation to many parks and other protected areas. This underrepresentation and other attributes of park visitation can be partially explained through the theoretical lens of constraints to recreation. Constraints are factors that limit participation, affect leisure preferences, and / or reduce enjoyment and satisfaction with recreation experiences. Examples of constraints include inability to afford park fees, fear of crime in parks, and lack of available leisure time. This thesis contains two standalone articles focusing on resident constraints to visiting urban parks and other natural areas in the Portland, Oregon (USA) metropolitan region. These articles examine: (a) the most common constraints to visiting these parks and natural areas, and whether these constraints vary between traditionally well-served (i.e., white majority residents) and underserved (i.e., ethnic and racial minorities) populations; (b) relationships among constraints, park visitation, and place attachment for both of these groups of residents; and (c) how constraints groups, different types of constraints, and resident characteristics (e.g., minorities) are distributed spatially across this metropolitan region. Data were obtained from mail and online questionnaires completed by two samples of residents in Clackamas, Multnomah, and Washington counties: (a) a proportionate random sample of residents mostly targeting the following groups: African Americans / Blacks, American Indians, Asians, Hispanics / Latinos, Middle Eastern peoples, and Slavic / Eastern European peoples (i.e., probability sample); and (b) a convenience sample of Opt-In panel members (i.e., nonprobability sample). Questionnaires were completed by a total of 3,328 residents across these samples, and the data were weighted by the most recent Census based on county, age, sex (male, female), and education to be representative of adult residents in this region. Race and other demographics were consistent with the Census after weighting. Results of the first article showed that the primary constraints to visiting parks and natural areas in this urban region were being too busy to visit, limited knowledge about Metro parks, and lack of access to these places (Metro parks are managed by Metro, which is the main regional government for Clackamas, Multnomah, and Washington counties). There were no differences in these constraints and most other constraints between traditionally underserved and well-served populations. Traditionally underserved residents, however, were significantly more constrained than the well-served residents were by race and cultural issues at parks, as well as lack of facilities and services at Metro parks. Traditionally well-served residents visited all parks and natural areas in the region significantly more often than did the underserved residents, but there were no differences in visitation to Metro parks or their favorite park. There were also no differences between the two groups in their attachment to their favorite park. Constraints and visitation explained 15% of the variance in attachment for well-served residents and 38% for underserved residents, and constraints explained 4% of the variance in visitation for well-served residents and 26% for underserved residents. The strongest negative predictor of attachment for well-served residents was Metro parks are not the best places, followed by limited access to these places and disinterest in visiting parks and natural areas. The strongest positive predictor for well-served resident attachment was frequency of visitation, followed by race and cultural issues at Metro parks, and lack of facilities and services in these areas. For underserved residents, the strongest negative predictor of attachment was costs followed by Metro parks are not the best places and limited knowledge about these places. Positive predictors of attachment for these residents included frequency of visitation and lack of facilities and services at Metro parks. The only predictor of visitation to their favorite park for well-served residents was fear of visiting other areas (positive relationship), whereas visitation for underserved residents was negatively associated with limited access to Metro parks and positively associated with costs of visiting other areas. The second article used a Geographic Information System (GIS) and hot spot analysis of the survey data to determine any spatial patterns in constraints groups, different types of constraints, and resident characteristics (e.g., minorities). Results revealed two major trends: (a) in the northeast area of the region, there is a clustering of minority residents overlapping with the most constrained hot spots and these residents were most affected by constraints associated with health and lack of recreation partners; and (b) residents in the southwest area of the region were most affected by constraints associated with limited knowledge and access to parks. Specific implications of these results for both management and research are discussed in this thesis. In general, however, these results may inform local agency objectives associated with reaching and engaging various populations, including ethnic and racial minorities. These findings also contribute to the literature by exploring relationships among constraints, park visitation, and attachment between traditionally well-served and underserved populations, and also by applying a GIS analysis of survey data to understand spatial aspects of constraints for each of these populations. Close

• 7317. [Article] Modifying the Hormone Strategy for Superovulating Donor Cows to Reduce Drug Costs without Decreasing the Number of High Quality Transferable Embryos Recovered

  Two research projects comprise this thesis. The first project investigated modifying the hormone dosing strategy traditionally used in superovulating donor cows for an embryo collection to decrease drug ...

  Citation × Citation Citation Abstract Copy Title: Modifying the Hormone Strategy for Superovulating Donor Cows to Reduce Drug Costs without Decreasing the Number of High Quality Transferable Embryos Recovered Author: Gomes, Maria (Maria Kristine) Two research projects comprise this thesis. The first project investigated modifying the hormone dosing strategy traditionally used in superovulating donor cows for an embryo collection to decrease drug costs without decreasing the number of high quality, transferable embryos recovered. The objective of this project was to evaluate the number and quality of embryos recovered from donor cows superovulated with a reduced dose of the pituitary gonadotropic hormone, follicle stimulating hormone (FSH), and a greater dose of the hypothalamic releasing hormone, gonadotropin releasing hormone (GnRH). In Experiment 1, 24 crossbred beef cows from the Oregon State University Beef Cattle Ranch were assigned to one of four superovulation treatment groups according to age and parity: 1) 400 mg FSH and 100 μg GnRH (the traditional doses), 2) 400 mg FSH and 200 μg GnRH, 3) 200 mg FSH and 100 μg GnRH, or 4) 200 mg FSH and 200 μg GnRH. Embryos were collected non-surgically 7 d after estrus onset and scored for stage of development and quality using a four-rank grading scheme. In Experiment 2, 12 crossbred beef cows from the Oregon State University Beef Cattle Ranch were superovulated twice with either 1) 400 mg FSH and 100 μg GnRH or 2) 200 mg FSH and 100 μg GnRH. Embryos were collected non-surgically as described in Experiment 1 and good to excellent quality late morulae to blastocysts were cultured, one embryo per 15-microliter drop, for 8 d. At 24-h intervals, embryos were evaluated for viability and overall development and transfered to a fresh micro-drop and conditioned medium was recovered. Conditioned media were assayed for plasminogen activator (PA), a protease correlated with embryo cell number and development to advanced cell stages. In Experiment 1, cows superovulated with 200 μg GnRH produced more unfertilized ova (P = 0.02) than cows superovulated with 100 μg GnRH. Cows superovulated with 200 mg FSH produced a higher percentage (P = 0.07) of transferable embryos and a lower percentage (P = 0.10) of degenerate embryos than cows superovulated with 400 mg FSH. Superovulating cows with the reduced FSH and GnRH doses (200 mg and 100 μg, respectively) yielded fewer total transferable embryos (1.8 embryos) but a greater percentage of transferable embryos at a reduced cost compared to the traditional dose ($24 vs $31 per embryo, respectively). Increased GnRH dosing had a negative effect on transferable embryos and the reduced FSH and increased GnRH dosing was not cost effective. In Experiment 2, cows superovulated with 400 mg FSH produced more unfertilized ova (P = 0.08) than cows superovulated with 200 mg FSH. More (P=0.04) embryos recovered from cows treated with 200 compared to 400 mg FSH developed to the hatched blastocyst stage in culture. Embryos recovered from cows treated with 200 compared to 400 mg FSH also developed to the expanded blastocyst stage sooner (P = 0.08). Embryos collected from cows receiving 200 mg FSH produced more (P = 0.04) PA in the first round of superovulation compared to 400 mg FSH and both doses in the second round. Similar to Experiment 1, the 200 mg FSH dose yielded fewer total transferable embryos in the first round of superovulation but at a reduced cost compared to the 400 mg dose ($25 vs $37 per embryo, respectively). Collectively, these data suggest higher FSH dosing is likely inducing ovulation of poorer quality ova which either fail to fertilize or, if fertilization occurs, may generate a reduced percentage of competent embryos. The reduced FSH dose not only contributes to a reduced cost but may also provide more embryos with a greater likelihood of pregnancy establishment. The second project in this thesis attempted to develop a dipstick-style enzyme assay to assess embryo viability prior to transfer. The objective of this project was to develop a dipstick that rapidly quantified PA production by an embryo and could be used on the farm for an embryo collection and transfer. Dipsticks were constructed by cutting and mounting 5 X 5 mm squares of cellulose acetate, chromatography paper, glass fiber membrane or nitrocellulose on the end of 5 X 25 mm plastic strips. Five microliters of 1, 10 or 50mM of the tripeptide glutamic acid-glycine-arginine (EGR; C₂₇H₃₆N₈O₇•CH₃COOH), a colorimetric substrate for urokinase (UK), were pipetted onto the 5 X 5 mm squares and dried. Dipsticks were incubated in 25-μL of culture medium containing 0, 1, 10, or 100 IU UK/mL or embryo-conditioned medium (ECM) and visually observed for color development at 30-min intervals for up to 90 min. Color development was scored using the following 3-point system where: 0 = absence of yellow, 1 = light yellow and 2 = bright yellow. Dipsticks were able to detect EGR cleavage in 10 and 100 IU/mL UK after 90 and 30 min of incubation, respectively, but no color was observed in dipsticks incubated in ECM. A second approach was developed using a 96-well plate. Twenty-five microliters of 1, 5, 10, 20 or 50 mM EGR were combined with 25-μL of culture mediumcontaining 0, 1, 10, or 100 IU UK/mL or ECM and observed for color development visually and photometrically at OD 405 using an ELISA plate reader at 30-min intervals for up to 120 min. Color development was visually observed in 1, 5, 10 and 50 mM EGR after 30 min of incubation with 100 mM UK/mL but no color was observed in wells containing ECM. However, when the plates were evaluated photometrically EGR cleavage was detected in wells containing ECM and 50 mM EGR after 30 min of incubation. Although the PA dipstick enabled visual detection of EGR cleavage by 10 and 100 IU/mL UK, it was not sensitive enough to detect PA in ECM. The 96-well plate assay was successful in detecting PA in ECM after 30 min of incubation but only photometrically. To use the plate-based assay would require the embryo transfer practitioner to have an ELISA plate reader on hand and the expense associated with such an instrument may limit its on farm application. Title: Modifying the Hormone Strategy for Superovulating Donor Cows to Reduce Drug Costs without Decreasing the Number of High Quality Transferable Embryos Recovered Author: Gomes, Maria (Maria Kristine) Two research projects comprise this thesis. The first project investigated modifying the hormone dosing strategy traditionally used in superovulating donor cows for an embryo collection to decrease drug costs without decreasing the number of high quality, transferable embryos recovered. The objective of this project was to evaluate the number and quality of embryos recovered from donor cows superovulated with a reduced dose of the pituitary gonadotropic hormone, follicle stimulating hormone (FSH), and a greater dose of the hypothalamic releasing hormone, gonadotropin releasing hormone (GnRH). In Experiment 1, 24 crossbred beef cows from the Oregon State University Beef Cattle Ranch were assigned to one of four superovulation treatment groups according to age and parity: 1) 400 mg FSH and 100 μg GnRH (the traditional doses), 2) 400 mg FSH and 200 μg GnRH, 3) 200 mg FSH and 100 μg GnRH, or 4) 200 mg FSH and 200 μg GnRH. Embryos were collected non-surgically 7 d after estrus onset and scored for stage of development and quality using a four-rank grading scheme. In Experiment 2, 12 crossbred beef cows from the Oregon State University Beef Cattle Ranch were superovulated twice with either 1) 400 mg FSH and 100 μg GnRH or 2) 200 mg FSH and 100 μg GnRH. Embryos were collected non-surgically as described in Experiment 1 and good to excellent quality late morulae to blastocysts were cultured, one embryo per 15-microliter drop, for 8 d. At 24-h intervals, embryos were evaluated for viability and overall development and transfered to a fresh micro-drop and conditioned medium was recovered. Conditioned media were assayed for plasminogen activator (PA), a protease correlated with embryo cell number and development to advanced cell stages. In Experiment 1, cows superovulated with 200 μg GnRH produced more unfertilized ova (P = 0.02) than cows superovulated with 100 μg GnRH. Cows superovulated with 200 mg FSH produced a higher percentage (P = 0.07) of transferable embryos and a lower percentage (P = 0.10) of degenerate embryos than cows superovulated with 400 mg FSH. Superovulating cows with the reduced FSH and GnRH doses (200 mg and 100 μg, respectively) yielded fewer total transferable embryos (1.8 embryos) but a greater percentage of transferable embryos at a reduced cost compared to the traditional dose ($24 vs $31 per embryo, respectively). Increased GnRH dosing had a negative effect on transferable embryos and the reduced FSH and increased GnRH dosing was not cost effective. In Experiment 2, cows superovulated with 400 mg FSH produced more unfertilized ova (P = 0.08) than cows superovulated with 200 mg FSH. More (P=0.04) embryos recovered from cows treated with 200 compared to 400 mg FSH developed to the hatched blastocyst stage in culture. Embryos recovered from cows treated with 200 compared to 400 mg FSH also developed to the expanded blastocyst stage sooner (P = 0.08). Embryos collected from cows receiving 200 mg FSH produced more (P = 0.04) PA in the first round of superovulation compared to 400 mg FSH and both doses in the second round. Similar to Experiment 1, the 200 mg FSH dose yielded fewer total transferable embryos in the first round of superovulation but at a reduced cost compared to the 400 mg dose ($25 vs $37 per embryo, respectively). Collectively, these data suggest higher FSH dosing is likely inducing ovulation of poorer quality ova which either fail to fertilize or, if fertilization occurs, may generate a reduced percentage of competent embryos. The reduced FSH dose not only contributes to a reduced cost but may also provide more embryos with a greater likelihood of pregnancy establishment. The second project in this thesis attempted to develop a dipstick-style enzyme assay to assess embryo viability prior to transfer. The objective of this project was to develop a dipstick that rapidly quantified PA production by an embryo and could be used on the farm for an embryo collection and transfer. Dipsticks were constructed by cutting and mounting 5 X 5 mm squares of cellulose acetate, chromatography paper, glass fiber membrane or nitrocellulose on the end of 5 X 25 mm plastic strips. Five microliters of 1, 10 or 50mM of the tripeptide glutamic acid-glycine-arginine (EGR; C₂₇H₃₆N₈O₇•CH₃COOH), a colorimetric substrate for urokinase (UK), were pipetted onto the 5 X 5 mm squares and dried. Dipsticks were incubated in 25-μL of culture medium containing 0, 1, 10, or 100 IU UK/mL or embryo-conditioned medium (ECM) and visually observed for color development at 30-min intervals for up to 90 min. Color development was scored using the following 3-point system where: 0 = absence of yellow, 1 = light yellow and 2 = bright yellow. Dipsticks were able to detect EGR cleavage in 10 and 100 IU/mL UK after 90 and 30 min of incubation, respectively, but no color was observed in dipsticks incubated in ECM. A second approach was developed using a 96-well plate. Twenty-five microliters of 1, 5, 10, 20 or 50 mM EGR were combined with 25-μL of culture mediumcontaining 0, 1, 10, or 100 IU UK/mL or ECM and observed for color development visually and photometrically at OD 405 using an ELISA plate reader at 30-min intervals for up to 120 min. Color development was visually observed in 1, 5, 10 and 50 mM EGR after 30 min of incubation with 100 mM UK/mL but no color was observed in wells containing ECM. However, when the plates were evaluated photometrically EGR cleavage was detected in wells containing ECM and 50 mM EGR after 30 min of incubation. Although the PA dipstick enabled visual detection of EGR cleavage by 10 and 100 IU/mL UK, it was not sensitive enough to detect PA in ECM. The 96-well plate assay was successful in detecting PA in ECM after 30 min of incubation but only photometrically. To use the plate-based assay would require the embryo transfer practitioner to have an ELISA plate reader on hand and the expense associated with such an instrument may limit its on farm application. Close

• 7318. [Article] Unraveling the Diagenetic Cycling and Sequestration of Rare Earth Elements (REEs) in Marine Sediments to Understand REE Accumulation in Ancient Shales

  The rare earth elements (REEs) have been established as powerful tracers for a range of physiochemical processes occurring in the natural environment. They also hold significant economic importance as ...

  Citation × Citation Citation Abstract Copy Title: Unraveling the Diagenetic Cycling and Sequestration of Rare Earth Elements (REEs) in Marine Sediments to Understand REE Accumulation in Ancient Shales Author: Yang, Jon The rare earth elements (REEs) have been established as powerful tracers for a range of physiochemical processes occurring in the natural environment. They also hold significant economic importance as many technological advancements are reliant upon the REEs for their unique magnetic, luminescent, and electrochemical characteristics. In sedimentary settings, understanding the cycling of the REEs is necessary to fully evaluate the application of the REEs as geochemical tracers and to understand the individual factors that may influence the magnitude and signature of REE accumulations. The association of the REEs with the major element cycles of iron (Fe) and phosphorus (P) have been extensively studied in modern sedimentary environments, but there remain uncertainties on the long-term accumulation and signature of the REEs. In particular, our knowledge of how the preserved record of the REEs in ancient marine black shales is derived from the cycling of REEs observed within modern sediments remains unclear. For these marine black shales, this gap in our knowledge has important ramifications for the potential use of the REEs as geochemical tracers of processes such as groundwater flow or hydraulic fracturing activity as well as the potential sourcing of REEs for economic extraction. In this dissertation, I attempt to refine our understanding of REE accumulation in ancient black shales, and how the original signals of the diagenetic cycling of REEs may be preserved, by using sequential extraction techniques to isolate individual reactive components in the sediments. Based on documented associations of the REEs and authigenic phosphate minerals in sedimentary systems, I first investigated the preserved record of P in two ancient black shales to unravel the environmental parameters that lead to the sequestration of P as carbonate fluorapatite (CFA) (Chapter 2). This authigenic mineral form is considered the main sink term of reactive P from the marine system, and the preserved record of CFA and other components of the P system may help understand the cycling of P during the deposition of these ancient black shales. Using the preserved signals of P cycling in the individual components of the P system of the ancient black shales, I estimated paleo-benthic P fluxes to evaluate how the sedimentary cycling of P may have impacted the nutrient delivery to the depositional basin. During the deposition of the Marcellus black shale formation in the Devonian Appalachian Basin, I estimated paleo-benthic inputs of P from the depositional area of the formation that were within the ranges of P delivered from large river systems such as the pre-anthropogenic Mississippi and Mackenzie rivers. These estimates suggest that a return flux of P from the sediments could have been a significant source of nutrients to the basin and provide support for a positive feedback mechanism suggested for epeiric, anoxic basins where a benthic flux of P could help stimulate primary productivity in the surface, leading to a greater drawdown of oxygen in deeper waters, and helping to maintain anoxic conditions in the basin that may enhance organic matter preservation. In the next chapter, I add in the signals of the sedimentary REE cycle preserved in ancient black shales in association with the preserved components of the P cycle (Chapter 3). In addition to the two blacks shales analyzed in Chapter 2 for the individual components of the P system, I analyzed the whole-rock REE content of black shales ranging in age from Jurassic to Devonian and representing a range of depositional environments. In these black shales, authigenic carbonates and fluorapatites hosted the majority of the REEs in sediment intervals with active authigenic mineral formation. Based on published relationships between REEs in diagenetic coatings and pore waters in modern sediments, I inferred from the preserved REE patterns of authigenic phases in black shales that the recorded signature reflects diagenetic zonation, where middle REE-enrichments might record the signal of Fe-(oxyhydr)oxide dissolution and heavy REE- enrichments might record the later diagenetic signal of methanogenesis. In sedimentary intervals where authigenic phases were not prevalent, which represents the majority of the black shale samples investigated, the REE signal was determined by remnant organic matter hosting the light REEs and siliciclastic material hosting the heavy REEs. Although these samples resembled typical globally average shale patterns of the REEs, a closer inspection of the components of the REE system suggest that average values of shale may be an amalgamation of different REEs phases. While the connections between the cycling of P and the REEs have been investigated in Chapters 2 and 3, the connections with the cycling of Fe, which have also been demonstrated to strongly influence the REEs, are absent due to the labile nature of the reactive Fe components that are not preserved in the black shales. Thus, in the final chapter of the dissertation, I describe the REE content measured in reactive Fe and P phases from modern sediments near the island of South Georgia (sub-Antarctic) that receive a large input of reactive Fe through glacial output (Chapter 4). Despite this large input of reactive amorphous Fe-(oxyhydr)oxide phases, the majority of the REEs measured in the sediments were hosted in refractory siliciclastics, with less than 15 % of the REEs in labile (extractable) phases. The low sedimentary REE pool associated with the labile amorphous Fe phase likely reflects deposition under a very shallow (< 300 m) water column that precludes scavenging of REEs from seawater. This inference is consistent with measurements I performed on the dissolved REEs in the water column at South Georgia, that show relatively lower concentrations compared to deeper waters in the Southern Ocean that experience greater degrees of particulate scavenging. For the REEs that were measured within the labile amorphous Fe and P phases, however, I found that the fidelity of the preserved REE record is also impacted by the ability of the REEs to transfer from labile phases to more permanently stable mineral phases. With increasing sediment depth, the REEs demonstrated a transfer from relatively amorphous phases of Fe-(oxyhydr)oxides to more crystalline carbonate components of the sediments, preserving a characteristic middle-REE-enrichment of Fe-(oxyhydr)oxides. Additionally, the REEs also showed a transfer from more labile, amorphous forms of Fe- (oxyhydr)oxides such as ferrihydrite/lepidocrocite into more crystalline forms such as goethite/hematite phases with depth. Collectively, the chapters of this dissertation describe the formation of REE signatures from the initial signals of diagenesis in marine sediments to the preserved record observable today in ancient marine black shales. The major element cycles of Fe and P strongly influence the cycling of REEs both in the origination of REE signatures (e.g., middle-REE-enrichments from Fe-(oxyhydr)oxides) and preservation of diagenetic signals (e.g., middle- to heavy-REE-enrichments in authigenic carbonates and fluorapatites). The insights learned about REE accumulation in marine black shales, which I present in this dissertation might potentially assist in evaluating which phases of the black shales are accessed during groundwater or hydraulic fracturing studies as well as guiding targets for potential REE extraction. Title: Unraveling the Diagenetic Cycling and Sequestration of Rare Earth Elements (REEs) in Marine Sediments to Understand REE Accumulation in Ancient Shales Author: Yang, Jon The rare earth elements (REEs) have been established as powerful tracers for a range of physiochemical processes occurring in the natural environment. They also hold significant economic importance as many technological advancements are reliant upon the REEs for their unique magnetic, luminescent, and electrochemical characteristics. In sedimentary settings, understanding the cycling of the REEs is necessary to fully evaluate the application of the REEs as geochemical tracers and to understand the individual factors that may influence the magnitude and signature of REE accumulations. The association of the REEs with the major element cycles of iron (Fe) and phosphorus (P) have been extensively studied in modern sedimentary environments, but there remain uncertainties on the long-term accumulation and signature of the REEs. In particular, our knowledge of how the preserved record of the REEs in ancient marine black shales is derived from the cycling of REEs observed within modern sediments remains unclear. For these marine black shales, this gap in our knowledge has important ramifications for the potential use of the REEs as geochemical tracers of processes such as groundwater flow or hydraulic fracturing activity as well as the potential sourcing of REEs for economic extraction. In this dissertation, I attempt to refine our understanding of REE accumulation in ancient black shales, and how the original signals of the diagenetic cycling of REEs may be preserved, by using sequential extraction techniques to isolate individual reactive components in the sediments. Based on documented associations of the REEs and authigenic phosphate minerals in sedimentary systems, I first investigated the preserved record of P in two ancient black shales to unravel the environmental parameters that lead to the sequestration of P as carbonate fluorapatite (CFA) (Chapter 2). This authigenic mineral form is considered the main sink term of reactive P from the marine system, and the preserved record of CFA and other components of the P system may help understand the cycling of P during the deposition of these ancient black shales. Using the preserved signals of P cycling in the individual components of the P system of the ancient black shales, I estimated paleo-benthic P fluxes to evaluate how the sedimentary cycling of P may have impacted the nutrient delivery to the depositional basin. During the deposition of the Marcellus black shale formation in the Devonian Appalachian Basin, I estimated paleo-benthic inputs of P from the depositional area of the formation that were within the ranges of P delivered from large river systems such as the pre-anthropogenic Mississippi and Mackenzie rivers. These estimates suggest that a return flux of P from the sediments could have been a significant source of nutrients to the basin and provide support for a positive feedback mechanism suggested for epeiric, anoxic basins where a benthic flux of P could help stimulate primary productivity in the surface, leading to a greater drawdown of oxygen in deeper waters, and helping to maintain anoxic conditions in the basin that may enhance organic matter preservation. In the next chapter, I add in the signals of the sedimentary REE cycle preserved in ancient black shales in association with the preserved components of the P cycle (Chapter 3). In addition to the two blacks shales analyzed in Chapter 2 for the individual components of the P system, I analyzed the whole-rock REE content of black shales ranging in age from Jurassic to Devonian and representing a range of depositional environments. In these black shales, authigenic carbonates and fluorapatites hosted the majority of the REEs in sediment intervals with active authigenic mineral formation. Based on published relationships between REEs in diagenetic coatings and pore waters in modern sediments, I inferred from the preserved REE patterns of authigenic phases in black shales that the recorded signature reflects diagenetic zonation, where middle REE-enrichments might record the signal of Fe-(oxyhydr)oxide dissolution and heavy REE- enrichments might record the later diagenetic signal of methanogenesis. In sedimentary intervals where authigenic phases were not prevalent, which represents the majority of the black shale samples investigated, the REE signal was determined by remnant organic matter hosting the light REEs and siliciclastic material hosting the heavy REEs. Although these samples resembled typical globally average shale patterns of the REEs, a closer inspection of the components of the REE system suggest that average values of shale may be an amalgamation of different REEs phases. While the connections between the cycling of P and the REEs have been investigated in Chapters 2 and 3, the connections with the cycling of Fe, which have also been demonstrated to strongly influence the REEs, are absent due to the labile nature of the reactive Fe components that are not preserved in the black shales. Thus, in the final chapter of the dissertation, I describe the REE content measured in reactive Fe and P phases from modern sediments near the island of South Georgia (sub-Antarctic) that receive a large input of reactive Fe through glacial output (Chapter 4). Despite this large input of reactive amorphous Fe-(oxyhydr)oxide phases, the majority of the REEs measured in the sediments were hosted in refractory siliciclastics, with less than 15 % of the REEs in labile (extractable) phases. The low sedimentary REE pool associated with the labile amorphous Fe phase likely reflects deposition under a very shallow (< 300 m) water column that precludes scavenging of REEs from seawater. This inference is consistent with measurements I performed on the dissolved REEs in the water column at South Georgia, that show relatively lower concentrations compared to deeper waters in the Southern Ocean that experience greater degrees of particulate scavenging. For the REEs that were measured within the labile amorphous Fe and P phases, however, I found that the fidelity of the preserved REE record is also impacted by the ability of the REEs to transfer from labile phases to more permanently stable mineral phases. With increasing sediment depth, the REEs demonstrated a transfer from relatively amorphous phases of Fe-(oxyhydr)oxides to more crystalline carbonate components of the sediments, preserving a characteristic middle-REE-enrichment of Fe-(oxyhydr)oxides. Additionally, the REEs also showed a transfer from more labile, amorphous forms of Fe- (oxyhydr)oxides such as ferrihydrite/lepidocrocite into more crystalline forms such as goethite/hematite phases with depth. Collectively, the chapters of this dissertation describe the formation of REE signatures from the initial signals of diagenesis in marine sediments to the preserved record observable today in ancient marine black shales. The major element cycles of Fe and P strongly influence the cycling of REEs both in the origination of REE signatures (e.g., middle-REE-enrichments from Fe-(oxyhydr)oxides) and preservation of diagenetic signals (e.g., middle- to heavy-REE-enrichments in authigenic carbonates and fluorapatites). The insights learned about REE accumulation in marine black shales, which I present in this dissertation might potentially assist in evaluating which phases of the black shales are accessed during groundwater or hydraulic fracturing studies as well as guiding targets for potential REE extraction. Close

• 7319. [Article] Two Studies Addressing Practical Needs of Wheat Farmers, Processors, and Breeders : Changes in Falling Number and Alpha-amylase During Grain Storage, and Improved Predictions of Wheat-flour Dough Properties

  Wheat (Triticum aestivum) is a globally traded staple food crop. The diverse and pleasing nature of wheat-derived products is a result of the complex interactions of the polymeric components from the wheat ...

  Citation × Citation Citation Abstract Copy Title: Two Studies Addressing Practical Needs of Wheat Farmers, Processors, and Breeders : Changes in Falling Number and Alpha-amylase During Grain Storage, and Improved Predictions of Wheat-flour Dough Properties Author: Adams, Mike R. Wheat (Triticum aestivum) is a globally traded staple food crop. The diverse and pleasing nature of wheat-derived products is a result of the complex interactions of the polymeric components from the wheat endosperm. Changes in the functionality of these polymeric components, as a result of changes in growing conditions or different genetics, impacts market price and end-product quality and directly affects farmers and processors. Wheat is of particular economic importance to the U.S. Pacific Northwest and, specifically, to the state of Oregon. Providing quality wheat for export is paramount to the survival of the Oregon wheat industry. This dissertation focuses on wheat quality from the perspective of serving the practical needs of farmers, processors, and wheat breeders. The first study, split into two portions, concerns pre-harvest sprouting (PHS) and grain storage. PHS increases alpha amylase (αA) activity in wheat, which, in excess, reduces wheat end-product quality. Falling Number (FN) is the primary test used by industry to gauge PHS damage in wheats. Direct measurement of αA activity is the fundamental frame of reference. The objective of these studies was to determine if FN and αA activity of wheat samples changed during storage and if changes were a function of storage time, storage temperature, and degree of PHS damage. Samples from three Idaho locations were used. These captured a wide range of PHS degree, and therefore, wide ranges of FN values and αA activities. Samples were subdivided and stored at -20°C, +20°C, and +40°C. Low FN values and high αA activities were observed in soft wheats from locations that had rain events prior to harvest. Overall, FN and αA activity had the curvilinear relationship expected from the literature, indicating the validity of the sample set with regard to the FN/αA relationship. Changes in FN and αA activity were observed over a 90 day period of grain storage. FN differed between growing environments, wheat varieties, and storage temperatures. αA activity also differed between growing environments and wheat varieties, but not between storage temperatures. Highest rates of increase in FN were observed in hard wheats with high initial (day 0) FN values. Lowest rates of increase in FN were observed in soft wheats with low day 0 FN values. This contrasted with the changes that occurred in αA activity. Decreases in αA activity over storage time were most prevalent in soft wheats, particularly sprouted soft wheats (i.e. those with day 0 αA activities > 0.1 Ceralpha Units: CU). There were small decreases in αA activity in hard wheats but the distinction between high and low αA activity samples was not as evident as in the soft wheats because the vast majority of hard wheat samples tested had αA activities < 0.1 CU. Decreases in αA activity were in general not associated with corresponding increases in FN values over grain storage time. Increases in FN values occurred at a higher rates as storage temperature increased, particularly in hard wheats with high day 0 FN. Grain storage was successful as a way to raise FN values to > 300 s in very few cases. Storage was not effective in decreasing αA activity from > 0.1 CU to < 0.1 CU. Increases in FN over storage time for the hard wheats significantly differed between locations. However, decreases in αA activities over storage time for the hard wheats were not significantly different between locations. This again highlights a lack of correspondence between increased FN and decreased αA activity, suggesting that these two factors are somewhat decoupled when looking at changes in stored grain. Temperature-induced gluten crosslinking was explored as possible explanation for drastic increases in unsprouted hard wheat FN observed in samples from one location. Total polymeric protein (TPP) content was assessed at the end of the study for unsprouted hard wheats stored at +40°C and -20°C as well as sprouted hard wheats from stored at -20°C. TPP content was assessed as % large unextractable polymeric proteins (%LUPP) and % total unextractable polymeric proteins (%TUPP) using size exclusion high performance liquid chromatography (HPSEC). TPP content was not significantly different between storage temperatures for wheat varieties from the same location. %TUPP, but not % LUPP, was significantly lower in wheat varieties affected by PHS. Changes in FN at high storage temperature were not likely due to increased protein crosslinking. The second study aimed to validate the use of a rapid method for predicting dough strength at early generations in hard wheat breeding programs. Early generation quality screening improves breeding program efficiency. Hard wheats are used to make leavened bread products. The gluten proteins, particularly high molecular weight glutenin subunits (HMW-GS), form large, ramifying networks called the glutenin macropolymer (GMP). High GMP content is associated with increased dough strength and bread quality. Genetic differences in HMW-GS, and by inference, GMP, are responsible for differing dough properties between varieties. The Mixograph is used to measure dough mixing properties and predict end-product quality in breeding programs. GMP can also be measured as total polymeric protein (TPP) via HPSEC. The Solvent Retention Capacity (SRC) test has been proposed to predict hard wheat quality, specifically lactic acid SRC (LASRC). The objectives of this research were to provide preliminary information on the usefulness of using LASRC, on its own, to predict dough mixing properties, specifically as applied to early generation screening in a wheat breeding program, and to assess the relationship between LASRC and TPP. Wheat samples were categorized by flour protein concentration (FPC). Mixograph analysis was used as the baseline for dough properties and was analyzed both by eye and by the proprietary Mixsmart software. TPP content was assessed as %LUPP and %%TUPP. As a result of redundancy between the two TPP measures, only %LUPP was used for statistical analysis. Dough mixing parameters were slightly better correlated with LASRC than %LUPP. Correlations between LASRC, %LUPP, and dough mixing parameters were different between FPC categories, particularly in low FPC samples. A strict cutoff of 115% LASRC effectively screened out the bottom 10% of low quality hard wheats but retained a nearly equal amount of low quality hard wheats that would have been screened out by mixograph analysis. LASRC and %LUPP are not likely to be effective predictors of dough properties, but may have some value to screen for hard wheat quality in the early generations of a wheat breeding cycle. Title: Two Studies Addressing Practical Needs of Wheat Farmers, Processors, and Breeders : Changes in Falling Number and Alpha-amylase During Grain Storage, and Improved Predictions of Wheat-flour Dough Properties Author: Adams, Mike R. Wheat (Triticum aestivum) is a globally traded staple food crop. The diverse and pleasing nature of wheat-derived products is a result of the complex interactions of the polymeric components from the wheat endosperm. Changes in the functionality of these polymeric components, as a result of changes in growing conditions or different genetics, impacts market price and end-product quality and directly affects farmers and processors. Wheat is of particular economic importance to the U.S. Pacific Northwest and, specifically, to the state of Oregon. Providing quality wheat for export is paramount to the survival of the Oregon wheat industry. This dissertation focuses on wheat quality from the perspective of serving the practical needs of farmers, processors, and wheat breeders. The first study, split into two portions, concerns pre-harvest sprouting (PHS) and grain storage. PHS increases alpha amylase (αA) activity in wheat, which, in excess, reduces wheat end-product quality. Falling Number (FN) is the primary test used by industry to gauge PHS damage in wheats. Direct measurement of αA activity is the fundamental frame of reference. The objective of these studies was to determine if FN and αA activity of wheat samples changed during storage and if changes were a function of storage time, storage temperature, and degree of PHS damage. Samples from three Idaho locations were used. These captured a wide range of PHS degree, and therefore, wide ranges of FN values and αA activities. Samples were subdivided and stored at -20°C, +20°C, and +40°C. Low FN values and high αA activities were observed in soft wheats from locations that had rain events prior to harvest. Overall, FN and αA activity had the curvilinear relationship expected from the literature, indicating the validity of the sample set with regard to the FN/αA relationship. Changes in FN and αA activity were observed over a 90 day period of grain storage. FN differed between growing environments, wheat varieties, and storage temperatures. αA activity also differed between growing environments and wheat varieties, but not between storage temperatures. Highest rates of increase in FN were observed in hard wheats with high initial (day 0) FN values. Lowest rates of increase in FN were observed in soft wheats with low day 0 FN values. This contrasted with the changes that occurred in αA activity. Decreases in αA activity over storage time were most prevalent in soft wheats, particularly sprouted soft wheats (i.e. those with day 0 αA activities > 0.1 Ceralpha Units: CU). There were small decreases in αA activity in hard wheats but the distinction between high and low αA activity samples was not as evident as in the soft wheats because the vast majority of hard wheat samples tested had αA activities < 0.1 CU. Decreases in αA activity were in general not associated with corresponding increases in FN values over grain storage time. Increases in FN values occurred at a higher rates as storage temperature increased, particularly in hard wheats with high day 0 FN. Grain storage was successful as a way to raise FN values to > 300 s in very few cases. Storage was not effective in decreasing αA activity from > 0.1 CU to < 0.1 CU. Increases in FN over storage time for the hard wheats significantly differed between locations. However, decreases in αA activities over storage time for the hard wheats were not significantly different between locations. This again highlights a lack of correspondence between increased FN and decreased αA activity, suggesting that these two factors are somewhat decoupled when looking at changes in stored grain. Temperature-induced gluten crosslinking was explored as possible explanation for drastic increases in unsprouted hard wheat FN observed in samples from one location. Total polymeric protein (TPP) content was assessed at the end of the study for unsprouted hard wheats stored at +40°C and -20°C as well as sprouted hard wheats from stored at -20°C. TPP content was assessed as % large unextractable polymeric proteins (%LUPP) and % total unextractable polymeric proteins (%TUPP) using size exclusion high performance liquid chromatography (HPSEC). TPP content was not significantly different between storage temperatures for wheat varieties from the same location. %TUPP, but not % LUPP, was significantly lower in wheat varieties affected by PHS. Changes in FN at high storage temperature were not likely due to increased protein crosslinking. The second study aimed to validate the use of a rapid method for predicting dough strength at early generations in hard wheat breeding programs. Early generation quality screening improves breeding program efficiency. Hard wheats are used to make leavened bread products. The gluten proteins, particularly high molecular weight glutenin subunits (HMW-GS), form large, ramifying networks called the glutenin macropolymer (GMP). High GMP content is associated with increased dough strength and bread quality. Genetic differences in HMW-GS, and by inference, GMP, are responsible for differing dough properties between varieties. The Mixograph is used to measure dough mixing properties and predict end-product quality in breeding programs. GMP can also be measured as total polymeric protein (TPP) via HPSEC. The Solvent Retention Capacity (SRC) test has been proposed to predict hard wheat quality, specifically lactic acid SRC (LASRC). The objectives of this research were to provide preliminary information on the usefulness of using LASRC, on its own, to predict dough mixing properties, specifically as applied to early generation screening in a wheat breeding program, and to assess the relationship between LASRC and TPP. Wheat samples were categorized by flour protein concentration (FPC). Mixograph analysis was used as the baseline for dough properties and was analyzed both by eye and by the proprietary Mixsmart software. TPP content was assessed as %LUPP and %%TUPP. As a result of redundancy between the two TPP measures, only %LUPP was used for statistical analysis. Dough mixing parameters were slightly better correlated with LASRC than %LUPP. Correlations between LASRC, %LUPP, and dough mixing parameters were different between FPC categories, particularly in low FPC samples. A strict cutoff of 115% LASRC effectively screened out the bottom 10% of low quality hard wheats but retained a nearly equal amount of low quality hard wheats that would have been screened out by mixograph analysis. LASRC and %LUPP are not likely to be effective predictors of dough properties, but may have some value to screen for hard wheat quality in the early generations of a wheat breeding cycle. Close

• 7320. [Article] The readability of selected fourth, fifth and sixth grade social studies textbooks as determined by the Fry Readability Graph and group informal reading inventories

  The purpose of this study was to determine the readability of three series of selected fourth, fifth and sixth grade social studies textbooks, a total of nine textbooks. Two measurements were utilized: ...

  Citation × Citation Citation Abstract Copy Title: The readability of selected fourth, fifth and sixth grade social studies textbooks as determined by the Fry Readability Graph and group informal reading inventories Author: Pruitt, Janet Louise McCracken, 1930- The purpose of this study was to determine the readability of three series of selected fourth, fifth and sixth grade social studies textbooks, a total of nine textbooks. Two measurements were utilized: a readability formula (Fry Readability Graph; Knapp, 1971), and group informal reading inventories. The Fry Graph was applied to ten randomly selected 100-word passages in each text; proper nouns were included in the computations. The group informal reading inventories were constructed from the same textbooks on passages not previously taught. The tests were administered in May to 1467 students in 70 randomly selected classrooms. Procedures Both descriptive and inferential statistics were used to analyze the data. Readability levels derived by the application of the Fry Graph were reported for each text:, as was the range of readability within each text and the deviation of each sample from the overall readability of the textbook. The test scores from the group informal reading inventories were first reported in terms of the per cent of subjects scoring at the independent level (90, 95, 100 per cent), the instructional level (65, 70, 75, 80, 85 per cent) and the frustration level (60 per cent or lower) for the sample. Mean test scores were also computed for the sample, the urban and rural subsets, for each grade level, and for each publisher. To determine if there were significant differences among the subsets, the following null hypotheses were formulated: H1 There are no significant differences in the mean scores of the urban and rural subjects. H2 There are no significant differences in the mean scores of the subjects in grades four, five and six. H3 There are no significant differences among the mean scores of the subjects tested on the D. C. Heath, the Silver Burdett or the Benefic Press social studies series. The differences among groups were statistically analyzed at the .05 and .01 levels of significance by the pooled variance t-test or by the analysis of variance. When the analysis of variance resulted in a significant F value, the multiple range test was applied to determine the exact location of the mean difference. Findings of the Study Fry Readability Graph 1. Two textbooks, the fourth grade textbooks published by D. C. Heath and by Silver Burdett, had readability levels in agreement with the publishers' designated grade level. The remaining seven textbooks had readability levels one to four years above the designated grade level. 2. The average range of readability within the textbooks was 6.2 years with little evidence of a gradation from less difficult to more difficult reading material. 3. When the three series were ranked according to their relative difficulty on the basis of the Fry readability levels, it was determined that: a. The D. C. Heath series is the least difficult. b. The Silver Burdett series occupies an intermediate position. c. The Benefic Press series is the most difficult. Group Informal Reading Inventories 1. For the total sample 9.41 per cent of the subjects scored at the independent level, 32.04 per cent scored at the instructional level, and 58.55 per cent scored at the frustration level. The mean test score was 54.82 per cent. 2. The mean score (56.64 per cent) of the urban subjects was significantly higher (.01 level) than the mean score (52.35 per cent) of the rural subjects with a t value of 3.30. H1 was rejected. 3. The mean score for grade four was 50.35 per cent; for grade five, 53.96 per cent; and for grade six, 58.09 per cent. The analysis of variance resulted in a significant (.01 level) F value of 11.25. H2 was rejected. 4. The mean scores by publisher were: D. C. Heath, 55.88 per cent; Silver Burdett, 55.77 per cent; and Benefic Press, 50.38 per cent. The analysis of variance resulted in a significant (.01 level) F value of 5.47. The multiple range test showed significant differences between the Benefic Press and D. C. Heath series (.01 level) and between the Benefic Press and Silver Burdett series (.01 level). There were no significant differences between the D. C. Heath and Silver Burdett series. H3 was rejected. Implications 1. The findings of this study did not differ in any substantial way from the results reported by earlier investigators. Further studies of the readability of social studies textbooks similar in content to the three series analyzed in this investigation is not warranted. 2. Additional research is needed to determine if systematic instruction resembling the procedures prescribed for a well-developed basal reading lesson will significantly affect the ability of students to comprehend social studies textbooks. Recommendations 1. Current knowledge regarding the nature of concept development should be a major consideration for curriculum decisions in the social studies. Piaget's findings regarding the cognitive functioning of elementary school students provide insight regarding the capabilities of this age group. 2. Instructional alternatives that diminish heavy reliance on the textbook should be afforded a fair trial in the classroom, e.g., simulation and gaming (Cuetzkow, 1962; Inbar, 1972), process analog (Fielder, 1967; Joyce, 1972), role playing (Shaftel, 1967), problem solving (Fenton, 1967; Shaftel, 1967), inquiry approaches (Suchman, 1964; Clements, Fielder, Tabachnick, 1966), and inductive development of concepts and generalizations (Taba, 1966; Fenton, 1966; Hanna, 1965). 3. A publicly financed agency staffed by expert analysts and equipped with the necessary resources should be established to provide analysis services to publishers and to determine the difficulty level of all instructional materials as they appear on the market (Bormuth, 1971). 4. Pilot editions of all new textbooks should be field tested with a cross section of students using procedures similar to those utilized by the publishers of standardized tests. 5. When classroom teachers make reading assignments in social studies textbooks, they should faithfully adhere to the same procedures that are prescribed for a well-developed basal reading lesson. Title: The readability of selected fourth, fifth and sixth grade social studies textbooks as determined by the Fry Readability Graph and group informal reading inventories Author: Pruitt, Janet Louise McCracken, 1930- The purpose of this study was to determine the readability of three series of selected fourth, fifth and sixth grade social studies textbooks, a total of nine textbooks. Two measurements were utilized: a readability formula (Fry Readability Graph; Knapp, 1971), and group informal reading inventories. The Fry Graph was applied to ten randomly selected 100-word passages in each text; proper nouns were included in the computations. The group informal reading inventories were constructed from the same textbooks on passages not previously taught. The tests were administered in May to 1467 students in 70 randomly selected classrooms. Procedures Both descriptive and inferential statistics were used to analyze the data. Readability levels derived by the application of the Fry Graph were reported for each text:, as was the range of readability within each text and the deviation of each sample from the overall readability of the textbook. The test scores from the group informal reading inventories were first reported in terms of the per cent of subjects scoring at the independent level (90, 95, 100 per cent), the instructional level (65, 70, 75, 80, 85 per cent) and the frustration level (60 per cent or lower) for the sample. Mean test scores were also computed for the sample, the urban and rural subsets, for each grade level, and for each publisher. To determine if there were significant differences among the subsets, the following null hypotheses were formulated: H1 There are no significant differences in the mean scores of the urban and rural subjects. H2 There are no significant differences in the mean scores of the subjects in grades four, five and six. H3 There are no significant differences among the mean scores of the subjects tested on the D. C. Heath, the Silver Burdett or the Benefic Press social studies series. The differences among groups were statistically analyzed at the .05 and .01 levels of significance by the pooled variance t-test or by the analysis of variance. When the analysis of variance resulted in a significant F value, the multiple range test was applied to determine the exact location of the mean difference. Findings of the Study Fry Readability Graph 1. Two textbooks, the fourth grade textbooks published by D. C. Heath and by Silver Burdett, had readability levels in agreement with the publishers' designated grade level. The remaining seven textbooks had readability levels one to four years above the designated grade level. 2. The average range of readability within the textbooks was 6.2 years with little evidence of a gradation from less difficult to more difficult reading material. 3. When the three series were ranked according to their relative difficulty on the basis of the Fry readability levels, it was determined that: a. The D. C. Heath series is the least difficult. b. The Silver Burdett series occupies an intermediate position. c. The Benefic Press series is the most difficult. Group Informal Reading Inventories 1. For the total sample 9.41 per cent of the subjects scored at the independent level, 32.04 per cent scored at the instructional level, and 58.55 per cent scored at the frustration level. The mean test score was 54.82 per cent. 2. The mean score (56.64 per cent) of the urban subjects was significantly higher (.01 level) than the mean score (52.35 per cent) of the rural subjects with a t value of 3.30. H1 was rejected. 3. The mean score for grade four was 50.35 per cent; for grade five, 53.96 per cent; and for grade six, 58.09 per cent. The analysis of variance resulted in a significant (.01 level) F value of 11.25. H2 was rejected. 4. The mean scores by publisher were: D. C. Heath, 55.88 per cent; Silver Burdett, 55.77 per cent; and Benefic Press, 50.38 per cent. The analysis of variance resulted in a significant (.01 level) F value of 5.47. The multiple range test showed significant differences between the Benefic Press and D. C. Heath series (.01 level) and between the Benefic Press and Silver Burdett series (.01 level). There were no significant differences between the D. C. Heath and Silver Burdett series. H3 was rejected. Implications 1. The findings of this study did not differ in any substantial way from the results reported by earlier investigators. Further studies of the readability of social studies textbooks similar in content to the three series analyzed in this investigation is not warranted. 2. Additional research is needed to determine if systematic instruction resembling the procedures prescribed for a well-developed basal reading lesson will significantly affect the ability of students to comprehend social studies textbooks. Recommendations 1. Current knowledge regarding the nature of concept development should be a major consideration for curriculum decisions in the social studies. Piaget's findings regarding the cognitive functioning of elementary school students provide insight regarding the capabilities of this age group. 2. Instructional alternatives that diminish heavy reliance on the textbook should be afforded a fair trial in the classroom, e.g., simulation and gaming (Cuetzkow, 1962; Inbar, 1972), process analog (Fielder, 1967; Joyce, 1972), role playing (Shaftel, 1967), problem solving (Fenton, 1967; Shaftel, 1967), inquiry approaches (Suchman, 1964; Clements, Fielder, Tabachnick, 1966), and inductive development of concepts and generalizations (Taba, 1966; Fenton, 1966; Hanna, 1965). 3. A publicly financed agency staffed by expert analysts and equipped with the necessary resources should be established to provide analysis services to publishers and to determine the difficulty level of all instructional materials as they appear on the market (Bormuth, 1971). 4. Pilot editions of all new textbooks should be field tested with a cross section of students using procedures similar to those utilized by the publishers of standardized tests. 5. When classroom teachers make reading assignments in social studies textbooks, they should faithfully adhere to the same procedures that are prescribed for a well-developed basal reading lesson. Close