VOL. LXXVII.] PHILOSOPHICAL TRANSACTIONS. 349 



the uterus, they were surrounded by pendulous bodies hanging loose in the horns. 

 The Fallopian tubes, at their termination in the uterus, are remarkably small 

 for some inches, and then begin to dilate rather suddenly ; and the nearer to the 

 mouth the more this dilatation increases, like the mouth of a French horn, the 

 termination of which is 5 or 6 inches in diameter. They are very full of longi- 

 tudinal rugae through their whole length. The ovaria are oblong bodies, about 

 5 inches in length ; one end attached to the mouth of the Fallopian tube, and 

 the other near to the horn of the uterus. They are irregular on their external 

 surface, resembling a capsula renalis or pancreas. They have no capsula, 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 is erect at that time, which I can readily suppose may be 

 true ; for otherwise, if the connection is long, it would interfere with the act of 

 respiration, as in any other position the upper surface of the heads of both could 

 not be at the surface of the water at the same time. However, as in the parts 

 of generation they most resemble those of the ruminating kind, it is possible 

 they may likewise resemble them in the duration of the act of copulation ; for I 

 believe all the ruminants are quick in this act. 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, there being only 2 nipples. This seemed to be the case with the 

 bottle-nose whale caught near Berkeley, which had been seen for some days with 

 a young one following it, and they were both caught together. 



The glands for the secretion of milk are 2 ; 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 4- 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. Some of these 

 lateral branches enter the common trunk in the direction of the milk's passage, 

 others in the contrary direction, especially those nearest to the termination of 

 the trunk in the nipple. The trunk is large, and appears to serve as a reservoir 

 for the milk, and terminates externally in a projection, which is the nipple. The 

 lateral portions of the sulcus which incloses the nipple, are composed of parts 

 looser in texture than the common adipose membrane, which is probably to 

 admit of the elongation or projection of the nipple. On the outside of this 

 there is another small fissure, which I imagine' is likewise intended to give 

 greater facility to the movements of all these parts. 



The milk is probably very rich ; for in that caught near Berkeley with its 



