XXVili INTRODUCTION. 
Mustela martes. 
>», Canadensis. 
Mephitis Americana, Hudsonica. 
Lutra Canadensis, ; 
Canis lupus occidentalis, var. grisea. 
D ” Pr atra, 
” ” A nubila. 
” ” ” Sticte. 
>», (Vulpes) fulyus. 
» ” » var. decussata. 
” ” » argentata. 
Felis Canadensis. 
Castor fiber, Americanus et varietates ejus nigrae, varie, et albee. 
Fiber zibethicus, colore interdum varians. 
Arvicola xanthognathus. 
,, Pennsylvanicus. 
Mus leucopus. 
Meriones Labradorius. 
Arctomys empetra. 
99 (Spermophilus) Hoodii (in the south-western limits of the district.) 
Sciurus (Tamias) Lysteri (in the southern part of the district.) 
if oe quadrivittatus (middle parts of the district.) 
»»  Hudsonius. 
19 niger (southern border of the district.) 
Hystrix pilosus. 
Lepus Americanus. 
Cervus alces. 
39 tarandus, sylvestris (only in a few spots.) 
Bos Americanus. 
Between this limestone district and the foot of the Rocky 
Mountains, there is an extensive tract of what is termed Prairie land. 
It is in general level, the slight inequalities of surface being imper- 
ceptible when viewed from a distance, and the traveller in crossing it 
must direct his course by the compass or the heavenly bodies, in the 
same way as if he were journeying over the deserts of Arabia, The 
soil is mostly dry and sandy, but tolerably fertile, and it supports a 
pretty thick sward of grass, which furnishes food to immense herds of 
the bison. Plains of a similar character, but still more extensive, have 
been deseribed by the American writers as existing on the Arkansaw 
» 
