Richardson Ground-squirrel 393 



The fur of this animal is used sometimes for cloak linings, 

 but it is thin and poor. The leather has a possible applica- 

 tion in the manufacture of *kid' gloves, but the skin is not 

 usually considered of any commercial value. 



The safe and successful method of exterminating this pest how to 

 of the farm is by poisoning with crude bisulphide of carbon, as mSate 

 recommended by the United States Biological Survey (Prairie 

 Ground-squirrel Report, 1893, p. 26). Two tablespoonfuls 

 of this on a bunch of rags or waste should be thrust into the 

 top or highest part of the burrow of the Ground-squirrel, and 

 the hole closed up. It gives off a poisonous gas which is 

 heavier than air. This follows down along the burrow and 

 kills the occupants, who are thus dispatched and buried out 

 of sight by a single operation. 



As this bisulphide is a poisonous, inflammable, and ex- 

 plosive substance it should be handled with care. 



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