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., 



Chief of Bureau. 



Issued June 20, 1910. 



WASHINGTON: 



GOVERNMENT PRINTING OFFICE 



1910. 



