212 
Mr. Home’s anatomical Account 
the two lobes of the liver. They are oval, flattened, pulpy 
bodies. The epididymis nearly surrounds the testicle, and 
then forms the vas deferens, which makes many close turns 
upon itself, and passes downwards, adhering to the anterior 
surface of the kidney, in which it is in some measure embed- 
ded : the lowest part of the vas deferens, for three feet in 
length, becomes very large, and has no convolutions. The 
vasa deferentia contained a substance like thin starch, broken 
down into small rounded portions, mixed with a thinner fluid. 
These ducts were so large, as readily to allow a man’s arm 
to be introduced up to the shoulder. Each vas deferens ter- 
minates by a small contracted orifice in the urinary bladder, 
one on each side, so that this bladder is both a reservoir for 
the urine and semen. The bladder in the male opens exter- 
nally by an infundibular process, which constitutes the penis. 
On each side of the anus, within its verge, near the root of 
the penis, is an oblique aperture, communicating freely with 
the cavity of the abdomen. 
From the account which has been given, the Squalus maxi- 
mus appears in many respects to be similar in its structure to 
the shark, but it differs essentially from it in the form of the 
stomach, and in that respect forms an intermediate link be- 
tween the shark and whale. It probably lives on nearly the 
same kinds of food as the whale. 
The sharks form a tribe of such extent, that from what we 
already know of their internal structure, they may be subdi- 
vided into many genera, making with the rays and scates, 
so many links between the whales and fishes, properly so 
called. The stomach and organs of generation are the parts 
in which the structures are most essentially different. In the 
