vi CONTENTS 



CHAPTER PAGE 



XXII. The Ascosfoke and Other Fungi 242 



XXIII. Bacterial Diseases of Plants 229 



XXIV. Preventives of Fungous Diseases 264 



XXV. Fungous Diseases of Insects 271 



XXVI. Bacteria and Plant Food 275 



PART IV 

 FRIENDS AND FOES AMONG THE BIRDS 



XXVII. The Relations of Birds to Fruit Orchards . . 285 



XXVIII. The Relations of Birds to Meadows and Pastures . 291 



XXIX. The Relations of Birds to Gardens and Fields . 296 



PART V 

 FRIENDS AND FOES AMONG THE MAMMALS 



XXX. The Squirrels 307 



XXXI. The Mice and Rats 312 



XXXII. The Rabbits, Pocket Gophers, Moles, and Shrews . 321 



Bibliography 328 



Index 329 



