414 ANATOMY OF VERTEBRATES, 



iliac regions, whence it stretched upward and to the right side 

 obliquely across the abdomen, to the right hypochondrium, where 

 it became contracted and finally bent downward and backward 

 to terminate in the duodenum. The whole length of the stomach, 

 following its curvatures, was three feet six inches, equalling that 

 of the animal itself from the muzzle to the vent. 



The cavity may be regarded as consisting of a left, a middle, 

 and a right or pyloric division. The left extremity of the 

 stomach is bifid, and terminates in two round cul-de-sacs. The 

 sacculi of the stomach are produced, like those of the colon, by 

 three narrow longitudinal bands of muscular fibres, which gradu- 

 ally disappear, together with the sacculi at the pyloric division. 

 One of the longitudinal bands runs along the greater curvature, 

 at the line of attachment of the gastro-colic omen turn ; the others 

 commence at the base of the left terminal pouches, and run, one 

 along the anterior, the other along the posterior side of the sto- 

 mach : the interspace, between these bands, forming the lesser 

 curvature of the stomach, is not sacculated. The largest of the 

 two terminal sacculi, d, fig. 310, is lined with an insulated patch 

 of vascular mucous membrane, which is continued for the extent 

 of five inches into the cardiac cavity ; the thick epithelium is 

 continued from the oesophagus in one direction into the nearest 

 and smallest sacculus, c, and extends in a sharp- pointed form for a 

 considerable distance in the opposite direction into a series of 

 sacculi in the middle compartment of the stomach, ib. e : this 

 epithelium is quite smooth. The vascular mucous surface re- 

 commences by a point at the great curvature, near the beginning 

 of the middle compartment, and gradually expands until it forms 

 the lining of the whole inner surface of the rio;ht half of the 



c3 o 



stomach. Three rows of clusters of mucous follicles, ib. g, g, 

 are developed in the mucous membrane of the pyloric half of the 

 middle compartment; they are placed parallel with the longi- 

 tudinal muscular bands : about fifteen patches are situated along 

 the greater curvature, and there are nine in each of the anterior 



o ' 



and posterior rows. These glandular patches disappear alto- 

 gether in the pyloric compartment of the stomach, where the 

 lining membrane is thickened, and finely corrugated ; but imme- 

 diately beyond the pylorus there is a circular mucous gland 

 three-fourths of an inch broad : the non-sacculated pyloric divi- 

 sion of the stomach was five inches in length. 



In the smaller species of Kangaroo the stomach is less compli- 

 cated than in the Macropus major; the number of sacculi is 

 fewer : in Macropus parryi, e. g., the third longitudinal band at 

 the great curvature of the stomach is almost obsolete : in the 



