LIST OF ILLUSTRATIONS 



FACING 

 PAGE 



Potatoes growing upon a tomato vine after grafting upon 



the potato root . . . . . .85 



Aerial potatoes growing upon a potato cion grafted upon a 



tomato plant . . . . . .92 



A rare two-petaled hybrid seedling lily . . .99 



The plumcot, created from the plum and apricot. A rare 



new fruit ....... 110 



The "Climax," one of the rarest plums produced . .110 



The development of the plum. The two larger ones are 



seedlings of the other two . . . .117 



The Giant plum, not only of largest size but of great rich- 

 ness and prolific in bearing .... 124 



The sugar prune, — larger, sweeter, earlier and more pro- 

 ductive than the older prunes .... 131 



One of the many rows of seedling Shasta daisies from 

 which selection is being made. The rows are seven 

 hundred feet long . . . . .142 



One of the "Shasta" daisies. The blossoms are from four 



to six inches in diameter . . . . 149 



Fluted daisies, one of the many curious forms developed 



in the production of the Shasta daisies . .156 



What the thornless cactus will displace — a hint of desert 



conditions . . . . . . .163 



The cactus in the foreground is the ordinary thorny kind. 

 Those in the rear are the thornless ones of the same 

 species . . . . . . . 174 



Cactus tests. — Thornless, hybrid seedling Opuntias, now 

 eight weeks old from seed. They will be transplanted 

 later, after rigid selection . . . .181 



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