CONTENTS. 



Page. 



Introduction 5 



Summary of life history and habits C 



Farm practice in relation to bolhvonn injury 7 



Destructiveness of the bollworm 9 



Plan and scope of investigation 11 



Some results of field work 14 



Wills Point farm 16 



Pittsburg farm 20 



Summary remarks concerning experiments with cultural methods 2,3 



Trap crops 25 



Use of arsenical poisons .-. 28 



Ineffective methods of bollworm control 31 



Recommendations 31 



212 



3 



