RODENT PESTS OF THE FARM. 23 



for bounties on pocket gophers or ground squirrels would, if wisely 

 expended in poisoning operations, secure the destruction of every 

 such animal in the county and make unnecessary any further outlay 

 for the purpose. The bounty system affords no permanent relief 

 from rodent pests and entails heavy taxation as long as it is 

 continued. 



The Bureau of Biological Survey has developed effective methods 

 of destroying field mice, pocket gophers, ground squirrels, prairie- 

 dogs, and other noxious rodents. These have been applied over 

 wide areas and their effectiveness fully demonstrated. The work 

 has been done on public lands by the bureau alone or elsewhere in 

 cooperation with other bureaus or with State or county authorities. 

 A wide extension of these activities is planned, and correspondence 

 or conference on the subject is invited. 



PUBLICATIONS OF THE U. S. DEPARTMENT OF AGRICULTURE 

 RELATING TO NOXIOUS MAMMALS. 



AVAILABLE FOR FREE DISTRIBUTION. 



How to Destroy Rats. (Farmers' Bulletin 369.) 



The Common Mole of Eastern United States. (Farmers' Bulletin 583.) 



Field Mice as Farm and Orchard Pests. (Farmers' Bulletin 670.) 



Cottontail Rabbits in Relation to Trees and Farm Crops. (Farmers' Bulletin 



702.) 



Trapping Moles and Utilizing Their Skins. (Farmers' Bulletin 832.) 

 Plouse Rats and Mice. (Farmers' Bulletin 896.) 

 Cooperative Campaigns for the Control of Ground Squirrels, Prairie-Dogs, and 



Jack Rabbits. (Separate 724, Yearbook for 1917.) 

 The House Rat: The Most Destructive Animal in the World. (Separate 725, 



Yearbook for 1917.) 



FOR SALE BY THE SUPERINTENDENT OF DOCUMENTS, GOVERNMENT PRINTING 

 OFFICE, WASHINGTON, D. C. 



Some Common Mammals of Western Montana in Relation to Agriculture and 

 Spotted Fever. (Farmers' Bulletin 484.) Price 5 cents. 



Meadow Mice in Relation to Agriculture and Horticulture. (Separate 388, 

 Yearbook 1905.) Price 5 cents. 



Pocket Gophers as Enemies of Trees. (Separate 506, Yearbook 1909.) Price 

 5 cents. 



The Jack Rabbits of the United States. (Biological Survey Bulletin 8.) Price 

 10 cents. 



Coyotes in Their Economic Relations. (Biological Survey Bulletin 20.) Price 

 5 cents. 



Economic Study of Field Mice, Genus Microtus. (Biological Survey Bulletin 

 31.) Price 15 cents. 



Directions for the Destruction of Wolves and Coyotes. (Biological Survey Cir- 

 cular 55.) Price 5 cents. 



Destruction of Deer by the Northern Timber Wolf. (Biological Survey Circu- 

 lar 58.) Price 5 cents. 



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