446 Mr. Hunter’s Obfervations , &c. 
the nipple. On the outfide of this there is another fmall 
fiflure, which, I imagine, is likewife intended to give greater 
facility to the movements of all thefe parts. 
The milk is probably very rich ; for in that caught near 
Berkeley with its young one, the milk, which was tafted by 
Mr. Jenner and Mr. Ludlow, Surgeon, at Sodbury, was 
rich like Cow’s milk to which cream had been added. 
The mode in which thefe animals muff fuck would appear 
to be very inconvenient for refpiration, as either the mother or 
young one will be prevented from breathing at the time, their 
noftrils being in oppofite directions, therefore the nofe of one 
muft be under water, and the time of fucking can only be be- 
tween each refpiration. The aCt of fucking muft likewife be 
different from that of land animals ; as in them it is performed 
by the lungs drawing the air from the mouth backwards into 
themfelves, which the fluid follows, by being forced into the 
mouth, from the prefl'ure of the external air on its furface ; 
but in this tribe, the lungs having no connexion with the 
mouth, fucking muft be performed by fome aCtion of the 
mouth itfelf, and by its having the power of expanfion. 
E X P L A- 
