318 FARM FRIENDS AND FARM FOES 



made of coiled wire are useful if placed in the runways, 

 either baited or unbaited, but they require constant atten- 

 tion. A single hawk left in peace is likely to do the work 

 of many traps. Poisons may also be employed, but these 

 should be used by persons of mature judgment on account 

 of the danger of injury to children, domestic animals, and 

 friendly birds. Specific instructions as to the best poisons 

 and their use may be obtained from the Biological Survey, 

 Washington, D.C. In some states the use of poisoned baits 

 is prohibited by law. 



The injury done by meadow mice to trunks of trees may 

 generally be prevented by protecting the trunk with a 

 wrapping of wire screening or some other tree protector. 

 In many states wood veneer protectors are used to prevent 

 injury by " sun scald " as well as mice. There is much 

 evidence, also, to indicate that a simple application of the 

 lime-sulphur wash used against the San Jose scale is an 

 efficient protection. Tramping down the snow next the 

 trees also saves them from injury, but this is not always 

 practicable. 



WHITE-FOOTED MICE 



There are many species and varieties of the White- 

 footed Mouse, which 

 perhaps is the most 

 beautiful member of 

 the family. They are 

 all alike in having the 

 lower parts of the 

 body as well as the 

 legs and feet of a 

 white color that con- 

 WHITE-FOOTED OR DEER MOUSE trasts strikingly with 



