| OCR Text |
Show 414 DR. J. G. GARSON ON THE [June 19, surface is covered with fine conical papillae, among which, here and there, regularly over its whole extent,|are scattered fungiform papillae of a white colour. These papillae are aggregated in a row along either side of the tongue. On the posterior portion are two large circum-vallate papillae of whitish colour, situated symmetrically on either side of the median line. Behind these the conical papillae become large and soft. The specimen under observation showed a number of transverse markings, corresponding apparently to the rugosities on the palate ; there were also some transverse markings or cracks observed on the posterior portion. The epiglottis is of large size; and there is a large pouch-like cavity between it and the back of the tongue. The oesophagus is about 15-16 cm. in length ; at its lower end, immediately before entering the stomach, its mucous lining becomes thrown into longitudinal folds and becomes thickened. The stomach is in general outline essentially like that of Sus scrofa. When laid out flat it measures 12*2 cm. in its long axis and 8*3 cm. in depth between the two curvatures. To the left of the oesophageal opening is a conical pouch-like projection arising as it were from the left upper and posterior part of the viscus. The walls of the pouch are thick, and have longitudinal markings of bands of fibres running on the surface, directed towards the apex of the cone. On opening the viscus, it is found that the mucous membrane of the pouch-like cavity is very rugose, and that there is a well defined constricting ring developed on the right side or the side next the oesophageal opening which separates the pouch from the remainder of the gastric cavity. The thickened epithelium of the oesophagus extends some distance over the lining of the upper wall of the stomach around the cardiac orifice, and is so folded at the latter point as to form a sort of valve as in the Pig. The transverse ridge which marks off the antrum pyloricum is less marked than it is in the Pig. Towards the pylorus the walls of the stomach become considerably hypertrophied. The pylorus can be completely occluded by an oval pad situated on the side of the lesser curvature, which fills up completely its crescentic and concave under portion just as in the Pig. The small intestine is long but of small calibre, and when in situ is situated chiefly on the right side of the abdominal cavity. The duodenum makes a moderate-sized loop to the right before it crosses beneath the ascending colon. The Peyer's patches are scattered through the intestine ; but there is no large patch at the lower end of the ileum like that found in the Pig. The last part of the ileum ascends to the top of the caecum, which lies rather to the left side with its apex upon the bladder. The cacum is saccular, measuring 7*1 cm. in length. Its outline is straight, in contradistinction to the irregular crenated outline of that of the common Pig. A strong band of muscular fibres runs down the internal or left surface; a second band runs down the external or right surface ; and extending from the ileum to the posterior surface of the caecum is a third band. From the top of the caecum arises the colon, which has a spiral arrangement, in form like |
