20 FAKMERS BULLETIN 857. 



Economic Loss to the People of the United States tbrougli Insects that Carry- 

 Disease. (Entomology Bulletin 78.) 1909. I'rice, 10 cents. 



PreA-entive and Remedial Work Against Mosquitoes. (Entomology Bulletin 8S.) 

 1910. Price, 15 cents. 



The Rocky Mountain Spotted Fever Tick with Special Reference to the Prob- 

 lem of Its Control in the Bitter Root Valley in Montana. (Entomology 

 Bulletin 105.) 1911. Price, 10 cents. 



The Life History and Bionomics of Some North American Ticks. (Entomology 

 Bulletin 106.) 1912. Price, 30 cents. 



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