PROGRESS EEPOET ON THE EUROPEAN CORN BORER 
81 
the reactions of the insect to its environment in localities where there 
has been a good chance for a long period of adaptation. These data 
should give an accurate means not only of defining the best methods 
20 50 40 5Q 
ElNTHSl I NCH^S 
Fig. 40. — Climographs of typical localities infested in New England, western New York, 
eastern New York, and Ohio. Constructed from the averaged normal means (Weather 
Bureau) of the towns listed under each locality 
A, New England (two generations) : Boston, Mass. ; Rockport, Mass. ; Plymouth, Mass. ; 
Provincetown, Mass. 
B, Western New York (one generation) : Buffalo, Fredonia. 
C, Eastern New York (one generation) : Albany. 
D, Ohio (one generation) : Cleveland, Toledo, Sandusky. 
of studying the insect experimentally but also should serve as a 
basis for more accurate knowledge concerning the possibilities of 
damage under particular environmental conditions. 
25411°— 27 6 
