ARCTIC FOX. 
a ;id cicsart regions, he has no enemv bu: the 
Glutton, ^vho lies in ambush for him. 
" As the Vv^oif, the Fox, the Glutton, and 
ti^ie other animals which inhabit the northern 
regions of Europe, and z\sia, have passed from 
one continent to the other, and are found in 
America, the Isatis ought hkewise to be found 
there ; and I presume, that the Silver-Grey 
Fox of Xoi'tii America, of which Catesbv 
has given a figure, is the Isatis, and not a 
simple variety of the Fox." 
In the Supplement to this article, BulTon 
has confounded the Corsak Fox, or Canis 
Corsac of tlie Linncean svstem, with his Isatis, 
or Ar£l:ic Fox. He has even engraved a 
figure of the former, under the appellation of 
the latter. 
This error was occasioned bv a drawing: 
o 
transmitted from London to Buffon, bv Mr. 
Collinson, in 176S, accompanied bv the fol- 
lowing account — Mv friend, Mr. Paul 
Demidoff, a Russian,'* savs Mr. Collinson, 
who is an admirer of your works, sends 
vou 
