is practical, said that the whole matter was in the hands of the 

 Bureau of Entomology and that he considered their proposed 

 plan of control relying on the work of parasitic insects to be 

 better. In practice, apparently, we find Mr. Springer finds my 

 plan pays, and pays big 



Parasitic insects are not under the control of man. All 

 that man can do is to introduce si'iC hinsects. Naturally, when a 

 foreign, injurious insect is introduced without the parasites 

 that keep it in check at home, the introduction of such para- 

 sites is highly beneficial and such action is a simple matter of 

 common sense. But such parasites would become extinct were 

 not their host or hosts be kept from becoming extinct. 



Among other points at issue Mr. Raker had also asked 

 them to define their position in regard to my method of con- 

 trolling the bollweevil. I had pointed out, that inasmuch as 

 the bollweevil is adapting itself to go without cotton for a 

 long time and feeding and breeding in plants related to cotton, 

 apparently as the result of the Bureau's plan of control by try- 

 ing to starve it out by destroying the stalks as early in the 

 fall as no more cotton can be produced because of the ravages 

 of the pest, if the weevil be thus forced to adapt itself to new 

 food plants, it would be indefinitely more difficult to control it 

 on cotton, at least, if restricted to the means of control the 

 Bureau has to offer, since it could breed then earlier in the 

 spring through breeding now on other plants, aggravating 

 subsequent infestation of cotton and could also breed later in 

 the fall on plants other than cotton, causing a heavier sur- 

 vival than if it were confined to cotton as a food plant and 



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