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Show 690 DR. E. CRISP ON T H E H I P P O P O T A M U S . [June 27, of this family have the same kind of coloured secretion from the cutaneous surface. The description I have given of the stomach shows that it is one of the most remarkable, both in form and structure, among the terrestrial mammals. In addition to the small woodcut in m y last paper I have placed a drawing before the Society representing the interior of this viscus of the natural size, so that its peculiarities can be readily seen. I also exhibit casts that I have made of the stomachs of the Porpoise and Dolphin, with other viscera, so that a comparison may be made of the gastric cavities of these animals. I likewise place before the Society a new method of teaching comparative anatomy (a plan I have shown at the present Paris Exhibition*). It consists in modelling the viscera in clay to scale, and then taking casts of the various parts, so that in a small compass (in the space of 10 or 12 square inches) the whole visceral anatomy of the animal is seen, as shown in the specimen of the viscera of the Hippopotamus before the Society. I do not apologize for this digression, as the subject is intimately connected with all anatomical and physiological inquiries, and it is one, I believe, that may be turned to great practical account. Since m y paper was brought before the Society, I have seen the following in the article '* Pachydermata," in 'Todd's Cyclopaedia,' vol. iii. p. 871 *.-"The stomach of the Hippopotamus, or, at all events of the fcetal Hippopotamus, dissected by Daubenton, presents a very remarkable conformation. Externally it seems to be composed of three parts. The principal portion, extending from the cardiac extremity to the pylorus, was much elongated, resembling more a portion of intestine than an ordinary stomachal receptacle. Besides this central part, extending from the oesophagus to the pyloric valve, were two long appendages like two csecums, one arising on the right side of the oesophagus and running along the exterior of the stomach throughout almost its entire length and then folding backwards, the other and shorter cul de sac issuing from the posterior aspect of the cardiac extremity of the stomach and projecting towards the right side. The construction of the interior of this stomach is still more extraordinary than its external appearance; for it is so divided by septa that food coming into this viscus through the oesophagus may pass by different channels either into the central portion, which seems properly entitled to the name of stomach, or into either of the great diverticula appended to it. The inferior walls of the central stomach have nine or ten cavities in them, something like those of the Camel and Dromedary. The lining membrane both of the stomach and diverticula is granular and wrinkled, except by the pylorus, where the parietes become smooth and folded into numerous plicae somewhat resembling those of the third stomach of a ruminant, although there is no probability that rumination occurs in the animal under consideration." It will be seen from my account, judging only from the specimen I have examined, that the parts described by Daubenton as appeu- * Viscera of the Gorilla, and other specimens. |