DELPHINUS BIDENS. Ill 



when anything passed in a contrary direction ; for when water was 

 thrown into the intestine upwards, it could hardly be made to pass, * 

 while it flowed easily downwards. These cells begin at the duodenum 

 before it makes its quick turn, although but faintly, and terminate near 

 to the anus 1 . 



Of the Liver. — The liver was divided into two lobes, pretty nearly 

 equal in size, united at the bases. Into this union passed the round 

 ligament. There was no gall-bladder. The hepatic duct passed a con- 

 siderable way between the coats of the duodenum, viz. about 4 inches, 

 before it entered its cavity, which was about a foot from the pylorus. 



The Pancreas. — The pancreas lay in the curvature of the duodenum, 

 but of what shape I could not see. Its duct we could not find, and 

 suspected that it had joined the hepatic duct. 



Of the Kidneys. — The kidneys lay on each side of the spine, about 

 half-way up the abdomen. They are of the true conglomerated kind, 

 each lobe being perfectly distinct, and having its infundibulum. The 

 ureters came out at the lower ends, and were about a yard long ; they 

 appeared to make a turn upwards when near the bladder, and entered 

 that viscus in a direction contrary to that in most other animals. The 

 urinary bladder was small for the size of the animal, not thick in its 

 coats, of an oblong shape, and gradually terminating in the urethra. 

 One can hardly see a reason for a bladder at all. The urethra passed 

 along the vagina and opened in the external sulcus or vulva, on the 

 side next to the head, near to the clitoris. 



Of the Circulation. — The vena cava inferior, where it passes through 

 the sulcus of the liver, was about 6 inches diameter. The heart 

 appeared to be small for the size of the animal 2 . The valves of the 

 pulmonary artery and aorta were become so tender as to melt away by 

 a touch, which makes me suspect that they are not naturally so strong 

 as those of the human. 



All along the sides of the spine within the cavity of the thorax, also 

 upon the ends of the ribs, and between them, there are convolutions of 

 arteries formed in a pretty thick mass like those of the porpoise. 



Of the Tongue. — The tongue is a moveable and projecting one, like 

 most other animals 3 . 



Respiration. — The blowhole between its opening and the bone of the 

 head is composed of very thick ligamentous substance, having muscular 

 fibres in some parts of its substance, and others inserted into it, pro- 

 bably for the contraction and dilatation of the tube. At the opening 



1 [Hunt. Preps. 709—712, 742.] * [lb. Preps. Nos. 925—927.] 



3 [lb. No. 1488.] 



