2i6 
EXTINCT MONSTERS. 
situation of which is indicated by his exquisite sense of smell, 
and that, to obtain these, he turns up the ground with his tusks, 
so that whole acres may be seen thus ploughed up. 
Now, in Siberia, where the ground would be harder, we can 
imagine that the larger tusks of the Mammoth would be highly 
serviceable in uprooting fir trees and breaking off their branches, 
for Benkendorfs fortunate discovery informs us that such trees 
formed at least part of their food. 
