566 DE. J. MUMB ON THE ANATOMY OF THE SEA-LION. 



this remnant of the fcetal circulation was obliterated close to the vein, at the point where 

 a cross branch was sent to the third and another to the fourth lobe. The right lateral 

 ligament is attached to a small portion of the upper surface of the right or first lobe, and 

 near to its outer border. Posteriorly it joins the coronary ligament. The left lateral 

 ligament, thicker than the right, comes from the diaphragm, close to the cardiac orifice 

 of the stomach, and goes to the upper edge of the left lobe. The left end of the 

 gastro-hepatic omentum joins at right angles on its right face, whence the left lateral 

 ligament is continued onwards to the lower and inferior surface of the left capacious 

 vena cava. The coronary ligament, traced from right to left, is attached to the posterior 

 surface of the enlarged right vena cava, and passes along, between the vein and the 

 diaphragm, to where the ascending vena cava penetrates the diaphragm. Opposite 

 the right lobe of the liver it is joined at right angles with the right lateral ligament. 

 Around and behind the right surface of the left venous reservoir the coronary ligament 

 joins the left lateral ligament. 



c. Spleen, Mesenteric Glands, and Pancreas. — The spleen is a flat, elongated, tongue- 

 shaped organ, which lies behind and across the stomach, rather to the cardiac side of 

 its middle. Its upper end has a rounded head and a beak-like process, which last is 

 directed towards the left extremity of the stomach. The middle of the spleen is 

 slightly the broadest part ; the lower end is attenuated. The edges are smooth, and 

 there are only two shallow emarginations — one below and to the right side, the other 

 on the opposite border and about the middle. In the undistended state the spleen 

 is fourteen inches long and varies from one to three inches broad. It is attached 

 to the posterior wall of the stomach by a duplicature of the gastro-splenic omentum, 

 which is from an inch and a half to two inches broad, and runs down for two thirds the 

 length of the spleen in the central line. "Within this omental fold some seven branches 

 of the splenic artery and of the vein are conveyed to the gland in question ; these 

 divide into branches to the right and left sides as soon as they reach its surface, so that 

 there is little or no hilus lienis. The internal structure of the spleen is of the usual 

 trabecular character, and extraordinarily dilatable. Some enlarged lymphatic glands 

 were observed on its attached or gastric side ; but no accessory splenules existed, such 

 as Owen^ found in the Common Seal. 



The mesenteric glands lie upon the anterior and the posterior surface of the main 

 trunks of the superior mesenteric artery and vein. In all there are some six or seven 

 of these glands ; but they appear to form a continuous chain on either side of the 

 vessels spoken of. In front they are above six inches long. The upper part, close to 

 the root of the said vessels and below the duodenal flexure of the intestine, is an inch 

 broad ; but they lessen in size, and retain a nodulated character as they follow the 

 course of the vessels downwards ; and near the iliac flexure of the intestine the lower- 

 most gland forms a sharp turn or bend upwards and backwards. Behind they possess 



' P. Z. S. 1850, p. 152. 



