MEMOIR OF CAMPER. 
63 
>rain, was in genera! very uniform ; and that the po- 
**'tion of the upper and lower jaivs was tlie manifest 
cause of the most striking differences. The same 
ohservation may be extended from quadrupeds down 
finny race. 
rile above examination also enabled me to dis- 
cover whence those changes arose which progres- 
^icely take place in oui- features, from infancy to the 
**>ost advanced age. I was still, however, unable 
^o explain in what manner it was that the Greeks 
®^ould bav (3 acquired, at a very remote period, the 
®'nguia,. and dignified expression they gave to their 
%ures, atid which 1 liad never seen perfectly equal- 
0(1. I perceived, moreover, that in the copies taken 
om them the facial line did not differ from our own. 
‘ Having contemplated the inhahitants of various 
Nations vvith the greatest attention, I conceived that 
staking difference was occasioned, not merely by 
* 10 position of the lower jaw, but also by the quad- 
cangular form, and by the breadth of the face. On 
Comparing a great many heads together, 1 also ob- 
served that a line drawn down the forehead and pass- 
'og the upper lip indicated much of the difference in 
natuial physiognomy. This discovery formed the 
of my edifice. 
populous city of Amsterdam afforded me 
gcoat facilities for further observation, from early in- 
“Ct y to decrepit old age. By comparing these with 
eat. h other, my thoughts were directed to the natu- 
ifferences occasioned by the gradual growth of 
