. La cyclopaedia d'anatomie et physiologie. Anatomie ; physiologie ; Zoologie. 534 CEPHALOPODA. partie supérieure d'un ovale (gésier m, Jig. 219) situé au bas de l'palhal sac. Près de l'endroit où ce tube entre, l'intestin (n, Jig. 219) se poursuit à la gésier, et après un cours de quelques lignes communique avec un petit sachet laminé ou ap- pendage (p, Jig. 219) analogue à la spirale de co3cum la seiche, dans laquelle la sécrétion biliaire est versé : de là l'intestin est poursuivi, deux fois plié sur lui-même, mais sans réels variables dans ses dimensions, à son ter

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. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. 534 CEPHALOPODA. upper part of an oval gizzard (m, Jig. 219) situated at the bottom of the palhal sac. Close to where this tube enters, the intestine (n, Jig. 219) is continued from the gizzard, and after a course of a few lines communicates with a small round laminated pouch or ap- pendage (p, Jig. 219) analogous to the spiral co3cum of the Cuttlefish, into which the biliary secretion is poured: from thence the intestine is continued, twice bent upon itself, but with- out varying materially in its dimensions, to its termination (o, jig. 219). In this course it first ascends for about an inch and a half, then makes a sudden bend down to the bottom of the sac, and returns as suddenly upon itself, passing close to the pericardium, and terminat- ing between the roots of the branchiae. The alimentary canal is every where con- nected to the parietes of the abdomen by numerous filaments ; the only trace of a me- sentery exists between the two last portions of the intestine, which are connected together by membranes including the ramifications of an artery and vein.* The longitudinal rugae, into which the lining membrane of the oesophagus is thrown, disappear at its entrance into the crop. The muscular coat of the crop con- sists of an exterior layer of close-set circu- lar fibres and an inner layer of more scattered longitudinal ones. The lining membrane is thin but tough, with a smooth surface : when the cavity is empty, it is probably thrown into longitudinal folds by the action of the circular fibres. In the canal which leads to the gizzard, the lining membrane puts on a villous appearance and is disposed in distinct close-set longitudinal rugae. The gizzard is girt by two broad radiate muscles, of the thickness of two lines, arising from opposite tendons : it is lined by a thick cuticular membrane, delicately furrowed and adapted to numerous fine ridges which tra- verse longitudinally the whole

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