LIST OF ILLUSTRATIONS 



FACING 

 PAGE 



One of the thornless edible cacti, three and one-half years 



old, weighing, approximately, twelve hundred pounds . 188 



Forcing new forage plants under glass to get quicker results 195 



The pineapple quince, a greatly improved variety having 



the flavor of the pineapple .... 206 



Selections from sweet vernal grass under development to 



increase productiveness . . . . .213 



A bed of the new fragrant dahlias . . . . 220 



The fragrant verbena which has been given the odor of 



the trailing arbutus ..... 227 



The phenomenal berry, a new species of great size and rich- 

 ness. Individual berries are sometimes nearly three 

 inches long ...... 238 



Leaves of blackberry hybrid, all grown from seed of one 



plant, showing the remarkable variation . . 245 



An outfit for an amateur breeder .... 252 

 The essentials for amateur grafting . . . . 259 



Upper part of a tree bearing many grafts. As many as 

 five hundred fruits are grown upon a single tree at 

 once, no two exactly alike .... 270 



Showing method of grafting . . , .277 



Thousands of dollars' worth of seeds and bulbs in the 



packing- room . . . . . . 284 



The original Burbank plum tree. Millions of trees have 



been grown from it . . . . .291 



General view of the proving grounds at Sebastopol. Show- 

 ing many thousands of plants under test . . 302 



xiii 



