DEPARTMENT OF THE INTEEIOR. 



UNITED STATES G-EOLOGICAL SURVEY. 



F. V. HAYDEN, U. S. Geologist-in-ciiakgk. 



6?L , 



^f?^ FIRST ANNUAL EEPOET 



OF THE 



UNITED STATES 



ISTOMOLOGICAL COMMISSION 



FOR 



THE YEJ^R 1877 



RELATING TO THE 



ROCKY MOUNTAIN LOCUST 



AN© 



THE BEST METHODS OF PEEVENTING ITS INJURIES AND OF GUARDING 

 AGAINST ITS INVASIONS, IN PURSUANCE OF AN APPROPRIA- 

 TION MADE BY CONGRESS FOR THIS PURPOSE. 



WITH 



]yLA.FS -A.ND IIL.IL.USTRi5LTIO]SrS, 



WASHINGTON: 

 GOVERNMENT PRINTING OFFICE. 



1878. 



