96 EVOLUTION AND ANIMAL LIFE 



beautiful snowy-white berries so nearly transparent that the 

 small seeds may be seen in them; the Japanese Golden May- 

 berry, a cross of the Japanese R. palmatus (with small, tasteless, 

 dingy yellow, worthless berries) and the Cuthbert, the hybrid 

 growing into treelike bushes, six to eight feet high, and bearing 

 great, sweet, golden, semitranslucent berries which ripen before 

 strawberries; the Paradox, an oval, light-red berry, obtained in 

 the fourth generation from a cross of Crystal White Blackberry 

 and Shaffer's Colossal Raspberry. While most of the plants 

 from this cross are partly or wholly barren, this particular out- 

 come is an unusually prolific fruit producer. 



An interesting feature of Mr. Burbank's brief account, in his 



r 



FIG. 62. Three walnuts: at left Japanese walnut, at right English walnut, 

 and in middle a hybrid of these two. (From photograph by Burbank.) 



"New Creations" catalogue of 1894, of the berry experimenta- 

 tion is a reproduction of a photograph showing "a sample pile 

 of brush 12 feet wide, 14 feet high, and 22 feet long, containing 

 65,000 two- and three-year old seedling berry bushes (40,000 

 Blackberry X Raspberry hybrids and 25,000 Shaffer X Gregg 

 hybrids), all dug up with their crop of ripening berries." The 

 photograph is introduced to give the reader some idea of the 

 work necessary to produce a satisfactory new race of berries. 

 "Of the 40,000 Blackberry-Raspberry hybrids of this kind 

 'Paradox' is the only one now in existence. From the other 

 25,000 hybrids two dozen bushes were reserved for further 

 trial." 



