CO XT l:\TS 



Pago. 



Iiitiodtictinn 7 



Earliest obsinvatioiis 7 



Scope of present discussion 7 



Definitions 8 



Metliod of study 9 



Proliferation from fcediiisj piinctuies in sciuares 1(^ 



Proliferation from feeding:; punctures in l)oils II 



Influence of diilerent localities and sesisons 12 



01)servat ions on squares \'2 



Observations on bolls II 



Effects of climatic conditions lo 



Edeet on proliferation of fertilizinf^ tlie soil 17 



Proliferation following oviposition in s(]uares 21 



Summary of records for four variet ie;; 21 



Increase of mortality accompanyiufX more severe attack 2o 



Increased mortality in sfpiares and bolls due to proliferation 2t) 



Sunmiary of results of observations 27 



Kornuition of proliferation 27 



Increased mortality of weevil stages due to proliferat ion 2S 



Stimulation to |)roliferation by causes otber tlian weevil attack .' 29 



Proliferation stimulated by other insects 2'.i 



Proliferation stimulated by attacks of funfi;! 2!( 



Artificial stimulation to proliferation 80 



Metliod of treatment .'iO 



Results with sfpiares M 



Results with bolls .U 



Comparison of results from sim|)le needle punctures with ed'ects of <-hemical 



inject ions M 



Comparison of results from sealed and unsealed punctures ',U 



Conclusions •*"! 



Manner in which proliferation causes death of weevil stipes -i'l 



ReariiifT larva^ on purely proliferous food '^-'^ 



Mechanical crushin<x the real method •?•"> 



E\|)lanation of mechanical action 'W 



Proliferation in plants other than cotton -^ 



Conclusions as to nature an<l si<jnilicance of proliferation ^"^ 



Practical application of conclusions from this study •*•' 



Index '-^ 



5 



