ORDER OF RODENTIA. 
501 
provisions for the winter. These are composed of herbs, which 
the little Rodents dry in the sun, and afterwards pile up at the 
entrance to their burrow. They in this way form stacks about 
five feet in height and eight in diameter. The Pikas do not 
always derive advantage from their industry, for the wild in- 
habitants of the Siberian steppes gladly appropriate their hoards. 
