A MANUAL 



FOR THE 



STUDY OF INSECTS 



REVISED EDITION 



BY 



JOHN HENRY COMSTOCK 



Emeritus Professor of Entomology in Cornell University 



AND 



ANNA BOTSFORD COMSTOCK 



Emeritus Professor of Nature Study in Cornell University 



AND 



GLENN W. HERRICK 



Professor of Entomology in Cornell University 



tKtoenttetl) Ctottton 



ITHACA, NEW YORK 

 THE COMSTOCK PUBLISHING COMPANY 



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