Contents 



CHAPTER 



XVII. SEED-SCATTERING . , 



XVIH. SEED-CARRIERS . , 



XIX. CHANCES OF LIFE , 

 XX. FRIENDS AND FOES 



XXI. nature's MILITIA , . 



XXII. man's work on the farm a 



INDEX .... 



PAGE 

 246 



261 



277 



300 



337 

 361 



