CONTENTS. V 



PA R T III. 



INSECTICIDES, PREVENTIVES, AND MACHINERY. 

 CHAPTER I. 



PAGE 



Predaceous Insects, Parasites, and Fungous Diesases . . 418 



CHAPTER II. 

 Farm Practice to prevent Insect Attack 423 



CHAPTER III. 

 Preventives 430 



CHAPTER IV. 

 Insecticides 433 



CHAPTER V. 

 Machinery . 456 



