LIST OF ILLUSTRATIONS 



PAGE 



Fertilizing tests with lettuce. No. 1, no fertilizer; No. 2, 

 with potash ; No. 3, potash and nitrogen ; No. 4, 

 potash and phosphoric acid; No. 5, potash, nitrogen 

 and phosphoric acid . . . . . 60 



Field of corn bred to produce a high percentage of fat, or oil . 69 



Covering new wheats in the nursery to protect them from 

 sparrows and the weather. . . . .76 



Potato spraying experiments at the Cornell, New York, 



Station. Gain due to spraying, 233 bushels per acre . 85 



Planting new wheats by hand, a kernel at a time, in their 

 earlier years when but very few kernels exist . . 92 



Prof. W. M. Hays, now Assistant Secretary of Agriculture, 

 lecturing on weeds to a class at the Minnesota State 

 School of Agriculture ..... 101 



Making field notes on a new wheat. Every incident in the 

 life -history of the new wheat is recorded with the 

 utmost care ...... 108 



Sieves used in testing and cleaning new wheats, with scales 

 and record book . . . . , .ill 



Chateau on the Vilmorin estate, near Paris, home of a long 

 line of famous seedsmen . . . . .124 



Searching for the peach root -borer .... 133 



A lesson in winter pruning ..... 140 



Date-palm tree, 6^ years old, at Tucson. It was grown 

 from a sucker. It is bearing its third crop of fruit, 

 about 100 pounds ...... 149 



When the plums are ripe in California . . . 156 



When the California vineyards are heavy with the harvest . 165 



Windbreak and hedge of soft maples in a prairie region 



where forestry is being taken up . . .172 



