The Illustrations 



Page 



Result of Cross of Japan and English Walnut . . 44 

 Leaves from Second Generation Seedlings from Cross of 

 Common Persian Walnut {Juglans regia) and Cali- 

 fornia Native Walnut ... . . . . 45 



Hybrid Mesembryanthemum . . . . . 49 



Sample of Hybrid Poppies . . . . . 51 



Sample Leaves of the Two Species of Bocconia . . 52 

 Leaves from Hybrid Poppies . . . . . 53 



Capsules of Second Generation Hybrid Poppies . . 55 

 Original Wild Stoneless Plum at the Top, and Fourteen 

 of Its Seedlings w^hen Crossed with the French 

 Prune Below, about one-fourth Size . , . 57 

 The Plumcot — an Absolutely New Fruit ... 61 

 Original and Improved Beach Plum .... 61 



Ten Varieties of Plums Grown from the Seed of the 

 Burbank Plum Crossed with the Apricot Plum, 

 showing Variations ...... 61 



Thallus and Fruit of Spineless Cactus . . . 63 

 Bed of Seedlings from Spineless Cactus, showing Here 



and There Reversion to the Original Spinous Form 64 

 Edible Cactus or * * Barbary Fig ' ' ( Opuntia ficus-indka) 



from Malta 65 



Thornless Opuntia, with Joints Growing Out from the 



Fruit . 67 



VI 



