{'ONCMSIONS I'KK.M THIS SlIDV. 41 



of the plant. Natural factors haviiiL:' a fontrolliii;^' irillucncc on tli(^ 

 weevil will do thcii' work no less cIlrctiNt'ly if the iiitellii^ent assistance 

 of the |)lantei" l)e «iiven in the |)lantinu, cult lire, and sul»se(|iient care 

 of the cro[». l\i'|>eated and widely \ai'ied exj[)erieiice has proven that 

 the intelliwi'ut |)lantor can, as a rule, .so assist natural factor>, hy 

 adoptiiijj^ certain chanjjfes in his methods of cultivation, as to produce 

 a prolitahle crop in the face of conditions w hich would otherwise ha\(; 

 insured its failure. 



