OF THE SPERM WHALE® 103 
OF THE KIDNEYS, BLADDER, AND RENAL CAPSULES® 
“ The kidneys, in the whole of this tribe, are conglo- 
merated, being made up of small parts, which are only 
connected by cellular membrane, blood-vessels, and 
ducts, or infundibula, but not partially connected by 
continuity of substance, as in the human body, the ox, 
etc. The whole kidney is an oblong flat body, broader 
and thicker at the upper end than the lower. The ureter 
comes out at the lower end and passes along to the 
bladder, which it enters very near the urethra. 
The bladder is oblong, and small for the size of the 
animal. In the female the urethra passes along to the 
external sulcus or vulva, and opens just under the 
clitoris, much as in the human subject. The capsulce 
renales are small for the size of the animal when com- 
pared to the human, as indeed they are in most animals ; 
they are flat, and of an oval figure. 
OF THE BLOOD. 
“ The blood of animals of this order is, I believe, similar 
to that of quadrupeds, but I have no idea that the red 
globules are in larger proportion. I will not pretend 
how far this may assist in keeping up animal heat, but 
as these animals may be said to live in a very cold 
climate, or atmosphere, and such as readily carries off 
heat from the body, they may want some help of this 
kind. It is certain that the quantity of blood in this 
tribe, and in the seal, is comparatively larger than in the 
