OECELLA. 381 



described. Erom the apex of the first stomach it is prolonged along the upper 

 border of the spleen for two-thirds of its extent, and leaving that gland courses 

 upwards along the inferior border of the round gland splenule which is in such close 

 relationship with the spleen and which is thus situated on the great sac of the 

 omentum. It then is attached in a great curve along the anterior face of the first 

 stomach up to the point at which we started. 



Pancreas.— This gland, wholly liidden by the third cavity of the stomach, 

 extends between the right extremity of the first stomach and the commencement of 

 the duodenum. It is firmly attached to the portal vein which it almost wholly 

 embraces, and also to the duodenal attachment of the gastro-duodenal artery. Its 

 inferior extremity is immediately above the spleen, but separated from it by the 

 intervening attachment of the omentum. Above the extremity of the first stomach, 

 it lies side by side with the large gland of the first stomach. It does not reach the 

 anterior surface, as already stated, but when the liver is cut away, it is observed 

 surrounding the ducts and vessels of that gland, and a small process lies to the right 

 of the duct in the angle formed by the third stomach and the duodenum, and another 

 long portion to the right of the portal vein. It is placed obliquely from the 

 left forwards to the right, and is nearly oblong in form, with a small ofi'shoot to the 

 wall of the gastro-duodenal artery. It is four inches long by one and a half inch 

 in breadth. It opens into the ductus communis choledochus by two wide orifices, 

 lying one before the other in front of the portal vein as it enters the liver. Each 

 orifice is a quarter of an inch in diameter, and they are separated from one another by 

 an interval of similar extent. The most anterior of the ducts arises from the anterior 

 half of the gland, and is of sufficient capacity to admit a crow-quill for 3 inches 

 of its extent, and the posterior duct has a similar diameter, and arises in the hinder 

 half of the gland. The orifices of the ducts are thrown into thick folds, and w^hen 

 laid open the channels are seen to be covered with a smooth mucous membrane, 

 which is thrown into pits and depressions defined by strands of the mucous mem- 

 brane, minute orifices opening into the pits and depressions. 



Spleen. — This is attached to the lower border of the first stomach and lies 

 immediately below the extremity of the second stomach, but separated from it by 

 a wide interval (PL XXVII, figs. 11 and 13). Its length is 2-25 inches and its 

 breadth 1 inch, and it is placed transversely. It is cordate in form, and the base of 

 the heart-shaped body which is to the right, in one specimen is capped by a button- 

 shaped pedunculated portion of the gland. The body of the gland is attached 

 along nearly the whole of its length, andnt is thus sessile. The spongy texture of 

 the body of the gland is not continued directly into the button-like splenule, because 

 the latter is contained in a distinct capsule of its own, but there is a fibrous thicken- 

 ing of the concavity of the base of the body of the gland, through which the vessels 

 enter. In close relation to the left end of the spleen in the same specimen, there 

 is a pedunculated laterally compressed rounded splenule 0''-70 in diameter and 0*25 

 inch in thickness, but it is absent in another stomach. The trabecular substance is 

 resolvable into two well-marked portions, an external and internal; the former con- 



