BOBAK. 
Volga. Thev are seen about the Yaik, and 
Other neighbouring rivers. In Great Tartary, 
they inhabit the Southern Desart, and the Al- 
taic Mountains East of the Irtis. They cease 
to appear in Siberia, on account of it's nor- 
thern situation : but are found, again, beyond 
Lake Baikal, and about the River Argun, and 
the Lake Dalay ; in the sunny mountains about 
the Lena ; and very commonly in Kamts- 
chatka, though they rarely reach as high as la- 
titude fifty-five. 
They burrow extremely deep, and obliquely, 
to the depth of avo, i]:iree, and even four 
yards: forming numerous galleries, with one 
common entrance from the surface; and each 
gallery ending in the nest of the inhabitant. 
Sometimes, the burrows consist of onlv onr', 
passage. Thev are found in great abundance 
about the sepulchral tumuli, as they penetrate 
with great facility in the soft dry earth r but 
they are, also, very common in the rocky 
strata ; and, in the mineral part of the UraU 
lian Chain, often direct the miners to the veins 
of copper, by the fragments which appear at 
the mouth of their holes, flung out in the 
caursti 
