^^'^'''' BULLETIN 



|[lliiwk State ||ali 



? 



NATURAL HISTORY, 



VOLUME II 



Article IV. — Studies on the Contagious Diseases of 



Insects. 



Br S. A. Forbes. 



1886. 



J. W. FRANKS A SONS, PRINTBKS AND BINDERS 

 PEORIA, ILLINOIS. 



