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U. S. DEPARTMENT OF AGRICULTURE, 



BUREAU OF ENTOMOLOGY— BULLETIN NO. 88. 



L. O. HOWARD, Entomologist and Chief of Bureau. 



PREVENTIVE AND REMEDIAL WORK 



AGAINST, MOSQUITOES. 



BY 



L. O. HOWARD, Ph. D. 



ChifJ' of. Bureau. 



Issued June 20, 1910. 





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"^onal Muse^^ 



WASHINGTON: 



GOVEJINMENT PRINTING OFFICE, 



1910. 



