122 



ASSOCIATION OF ECONOMIC ENTOMOLOGISTS. 



Careful examinations in cotton fields aggregating several thousand 

 acres, between May 1 and August 1. 1905. showed that the weevil 

 had not survived the winter in the eastern portion of the territory 

 infested the previous autumn. In other words, the weevils were 

 exterminated by meteorological conditions in that area which they 

 did not occupy until after about the middle of SejDtember, 1904. and 

 in which therefore they did not have opportunity to breed up to 

 considerable numbers before the arrival of frost. The territorv 



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Fig. 4.— Area in Louisiana infested by AntJionomus yrandis in July, 1903 (.see shaded 



portion of map I . 



infested in July. 1905. is shown by figure 4. and by comparison with 

 the eastern limit of infestation in December. 1904 (fig. 3), an idea 

 will be had of the amount of territory actually lost by the insect. It 

 is. of course, conceivable that an occasional weevil may have survived 

 the winter in this territory, but the examinations of so many cotton 

 fields in different localities, and with different surroundings, by men 

 thoroughly skilled and practiced in detecting even the lightest infes- 

 tations, and each of whom was in ignorance of the findings of the 



