40 ANATOMY OF A CHELONIAN. 



f. On each side of the intestinal convolutions 

 are seen the posterior ends of the lungs. 



g. Partly covered by the pubis is the bilobed 

 urinary bladder^ generally much distended. If 

 collapsed, inflate it by means of a blowpipe 

 inserted through the cloaca. 



h. Immediately posterior to the gall-bladder, a 

 portion of Xh^ pancreas will be seen lying along 

 the duodenum. 



/. Note the entry of each anterior abdominal 

 vein into the liver-lobe on its own side. 



86. Next raise the right liver-lobe, and after observ- 

 ing the gall-bladder more closely, push the heart up, 

 and gently separate the left liver-lobe from the stomach ; 

 the great transverse Portal Vein, will then be exposed, 

 running across the liver from side to side ; opposite 

 the heart it gets a large vein from the pancreas, and 

 where it lies against the stomach many small veins 

 enter it from that organ. Note, also, the bridge of 

 hepatic tissue uniting the two main liver-lobes across 

 the middle line, behind the heart ; and the deep fissure 

 on the left lobe into which the right side of the stom- 

 ach fits, and where many small gastric veins directly 

 enter the liver. 



87. Without cutting the mesentery, gently uncoil the 

 Small Intestine, and trace it until it joins the Large Intes- 

 tine; a small Coecum projects beyond the point of com- 

 munication. Raising the gut, note the Mesentery which 

 slings it, and in this the numerous arches formed by 

 branches of the mesenteric artery, from w^hich smaller 

 twigs pass to the intestine ; also the accompanying 

 mesenteri<^ veins. 



