HOFFMEISTER & MOHR: ILLINOIS MAMMALS 



33 



rats and other mammals occasionally, gnaw and eat the bark 

 of trees, fig. 37. Rats and mice gnaw woodwork in buildings, 

 fig. 100, food packages, and other materials in constructing run- 



Fig. 37. — Winter damage to fruit tree by rabbits and voles. 

 The damage to the branches is by rabbits, that to the lower part of 

 the trunk bv voles. 



