Carpenter, William Benjamin, 1813-1885, Dallinger, W. H. (William Henry), 1842-1909 · Philadelphia, Blakiston · leaf 894
which is chiefly occupied by therespiratory sac ; the abdomen (B),which contains the digestive appa-ratus ; and the post-abdomen (C), inwhich the heart and generativeorgans are lodged. At the summitof the thorax is seen the oral oritice,c, which leads to the branchial sac e ;this is perforated by… … c •. .
Microscopy
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