[ 20 3 ] 
of a middle nature between the phoca*, and the real 
fifties of the fea, in one peculiar refpeft. This is the 
clafsof the phocenaa, or porpefies, of which there are 
feveral fpecies; and thefe have lungs, and therefore 
are forced to come up to the furface to breathe at 
very fhort intervals ; but, when brought on fhore, have 
no progrefiive loco-motion. So that, having lungs, 
they relemble the phocae, and, in every other refpect, 
the real fifties of the fea. 
Blafius, in his Anatome Animalium, page 288, 
gives an account of one of thefe taken and brought 
on fhore alive ; the people let him lye, to fee how 
long he could live out of the water ; and he continued 
alive only about feven or eight hours, and exhibited a 
kind of hifling voice. 
From what has been faid, it will, I hope, appear 
rational, that thefe are the only two orders, that can 
properly be deduced from the clafs of Amphibious 
animals; and that the genus’s of either order are very 
few in the animal world. 
D d 2 
Received 
