380 Mr. Hunter’s Obfervat'ions on the 
and we may fuppofe only in fmall quantity, the gland itfelf 
being fmall. 
The urinary bladder is fmaller than in quadrupeds; and in- 
deed there is not any apparent reafon why Whales lhould have 
one at all. 
The tongue is flat, and but little projecting, as they neither 
have voice, nor require much adion of this part, in applying 
the food between the teeth for the purpofe of maffcication, or 
deglutition, being nearly flmilar to fifh in this relpett, as well 
as in their progrefiive motion. 
In fome particulars they differ as much from one another as 
any two genera of quadrupeds I am acquainted with. 
The larynx, frze of trachea, and number of ribs, differ 
exceedingly. The caecum is only found in fome of them. 
The teeth in fome are wanting. The blow-holes are two in 
number in many, in others only one. The whalebone and 
fpermaceti are peculiar to particular genera: all which confli- 
tute great variations. In other refpects we find an uniformity, 
which would appear to be independent of their living and 
moving only in \ the water, as in the flomach, liver, parts of 
generation of both fexes, and in the kidneys : in thefe laft 
however, I believe, it depends in fome degree upon their fitua- 
tion, although it is extended to other animals, the caufe of 
which I do not underhand. 
All animals have, I believe, a fmell peculiar to themfelves : 
how far this is connected with the other diftinClions, I do not 
know, our organs not being able to diftinguifh with fufficient 
accuracy. 
The fmell of animals of this tribe is the fame with that of 
the Seal, but not fo ftrong, a kind of four fmell, which the 
5 Seal 
