( 8pj ) 
clearing up of fome Th^nomtna. in lefler Subjeds. Ac 
i leaft we may hereby obferve, what a variety of Mecha- 
i nifm the great Author of Nature has thought fit to em- 
j ploy, in the feveral parts of different Spcies of Animals. 
, Thus both the external Ear of Man, and of the Ek'‘ 
I fhunt lye flat, as being moft convenient: for if they 
I had been Protuberant as in moft Quadrupeds, how un- 
I fuitable would it have been in Man, who is the moft 
I perfed of all Creatures, not upon the account of his 
I Reafon alone, but aUo as he is a Pattern for Beauty 
! and the Symmetry of his Parts; and how unfeemly 
■ would it have been in th^Ele^hd^t, if his external Ear 
I had ftuck out, and been proportional to his other Parts ; 
I confidering wlwt an extraordinary afped he makes al- 
j ready by his Trunk and Tusks? But the Ears in thefe 
I two Subjeds differ by the tortuofity of the Cartilage, 
and oblique Meatus, to prevent the injury of the Air, 
by its immediate accefs into the inner Ear in Man : 
whereas in the Elephant the external Orifice is fully ex- 
pos’d to the Air ; but then the length of the Meatus 
hinders any more Air than is convenient from arriving 
at the Tympanum. We likewife fee in the Seal and Otter, 
that thofe two Amphibious Quadrupeds have no exter- 
nal Ear further protuberant than the other Parts of their 
Head ; for had it been otherwife, their fwimming and 
diving would have been much hindred : But its two 
fides are fo collaps’d, that no Water can enter in 
when in the Deep, though it can receive fufficienc Air 
when alhoar. The cellulous Cavity of the Tympanum 
in the Elephant, may well be compar’d to the Apophyfis 
Maftoides in Man ; and the fecond Cavity of a plain 
Surface Teems to be Analogous to the Cavous Maftoides 
in Sheep, Cats, Dogs, So that we Tec that whereas 
other Animals have but one Cavity for affiffing 
the Vibration of the Air, and continuation of the 
Zzzzzz Soujii 
