OF THE SPERM WHALE. 
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suddenly ; and the nearer to the mouth the more this 
dilation increases, like the mouth of a French horn, the 
termination of which is five or six inches in diameter. 
They are very full of longitudinal rugae through their 
whole length. The ovaria are oblong bodies, about five 
inches in length, one end attached to the mouth of the 
fallopian tube, and the other to the horn of the uterus. 
They are irregular in their external surface, resembling 
a capsula renalis, or pancreas. They have no capsulse 
but what is formed by the long fallopian tube. How 
the male and female copulate I do not know, but it is 
alleged that their position in the water at that time is 
erect, which I can readily suppose to be true. As in 
the sexual formation they most resemble those of the 
ruminating kind, it is possible they may likewise resemble 
them in the duration of the act, for I believe all the ru- 
minants are quick. Of their uterine gestation I as yet 
know nothing ; but it is very probable that they have 
only a single young one at a time. The glands for the 
secretion of milk are two, one on each side of the middle 
line of the belly at its lower part. The posterior ends 
from which go out the nipples, are on each side of the 
opening of the vagina in small sulci. They are flat 
bodies, lying between the external layer of fat and 
abdominal muscles, and are of considerable length, but 
only one-fourth of that in breadth. They are thin, that 
they may not vary the external shape of the animal, and 
have a principal duct running in the middle through the 
whole length of the gland, and collecting the smaller 
lateral ducts, which are made up of those still smaller. 
