CONTENTS. 



Page. 



Introductory 71 



Descriptive - . 72 



Distribution 73 



Recent injuries 73 



Methods of attack, food habits, and generations 76 



Life liistory and habits 79 



Notes on other ppecies 81 



Local conditions and natural influences 82 



jNIethods of control 83 



Arsenicals 83 



Arsenate of lead 83 



Dry Paris green 84 



Paris green spray 84 



Other arsenicals 85 



Summary on the use of arsenicals 85 



Contact sprays 85 



P.ordeaux mixture 87 



Mechanical and cultural methods 87 



Trap crops 87 



Rolling the fields 87 



The use of fertiliz(>rg 88 



Irrigation 88 



Tarred catchers 88 



Clean cultivation 89 



Literature 91 



Bibliography 91 



Summary , 92 



66 — VI 111 



