LOOKING-GLASS. 
167 
ftru6lure ; for every kind has received from the 
Supreme defigner a fet of invariable lines, as we 
fhall hereafter demonflrate, after o’bferving, that it 
would have been an operation becoming fuch en- 
lightened men as Buffon, Linnceus, Camper, and 
Euler, to have afcertained the forms of heads by a re- 
gular ftandard fixed on mathematical principles. 
For inftance j the ftriking diftin£lion in a man’s 
face from all others, is the regular proportion of 
the fore-part, which forms a perfect oval, w^hofe 
parts, being regularly divided, are preferved in 
equal fymmetry. 
It is in that refpeft that brutes are infinitely in- 
ferior to us, although they refeinble in the hind 
part of the fkull. 
Thus in paffing a line from the root of the teeth 
of the upper jaw, through the moft forward bone of 
the forehead, to crofs another horizontal line on the 
whole cheek, from the root of the nofe to the lower 
end or orifice of the ear, thefe two lines united 
would form an angle of about eighty to ninety de- 
grees. 
From the baboon downwards on the fcale of 
beings, all animals differ from that form more or 
lefs j and their inftin6f appears to be fo much the 
more limited, according as the union of thofe two 
lines forms in them a more pointed angle. 
Confequently, as mother Nature feems to have 
fixed a vifible connection between exterior forms 
M 4 and 
