FIG. 9--Astacus fluviatilis.--A, the stomach with its outer coat removed, seen from the left side; B, the same viewed from the front, after removal of the anterior wall; C, the ossicles of the gastric mill separated from one another; D, the prepyloric ossicle and median tooth, seen from the right side; E, transverse section of the pyloric region along the line xy in A (all x 2). c, cardiac ossicle; cpv, cardiopyloric valve; lp, lateral pouch; lt, lateral tooth, seen through the wall of the stomach in A; mg, mid-gut; mt, median tooth, seen through the wall of the stomach in A; oes, oesophagus; p, pyloric ossicle; pc, pterocardiac ossicle; pp, prepyloric ossicle; uc, uro-cardiac process; t, convexities on the free surface of its hinder end; v1, median pyloric valve; zc, zygocardiac ossicle.
[Editor's note: illustration is reproduced here approximately twice the size of the woodcut in the book.]
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