U. S. DEPARTMENT OF AGRICULTURE, 



BUREAU OF ENTOMOLOGY— BULLETIN No. 78. 



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



E(!ONOMIC LOSS TO THE PEOPLE OF THE 



UNITED STATES. THHOIKIH INSECTS 



THAT CARRY DISEASE. 



BY 



T.-O. HOWARD, Ph. D. 



EvtiHiioloi/iff iivil CJi'ief of Hnreau. 



IssuKi) March 18, 1909. 



WASHINGTON: 



GOVRRNMENT PRINTING OFFICE. 



1909. 



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