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Excerpt from The Cultivation of Oysters in LouisianaFig. 2. Diagram to show sexual organs of the oyster. D, duct of sexual gland. Other letters as above.The valves of the shell are not symmetrical, the left one, by which the oyster is always attached to its support, is deep and spoon shaped, while the right one is nearly ¿at.The work of compressing the ligament and closing the shells is done by a large, powerful muscle (plate 1, Fig. 1, m), wh...

Excerpt from The Cultivation of Oysters in Louisiana Fig. 2. Diagram to show sexual organs of the oyster. D, duct of sexual gland. Other letters as above. The valves of the shell are not symmetrical, the left one, by which the oyster is always attached to its support, is deep and spoon shaped, while the right one is nearly ¿at. The work of compressing the ligament and closing the shells is done by a large, powerful muscle (plate 1, Fig. 1, ...