LUTHER BURBANK 



But some of the seedlings were fertile, and 

 they manifested almost every possible combina- 

 tion of qualities of the raspberry and blackberry. 

 Some were similar to the Paradox, except that 

 they had white berries instead of red. 



By saving seeds from the white and the red 

 varieties separately, I found that they bred true, 

 each constituting practically a fixed species. 



As to the vines themselves, there is very little 

 variation, the canes and foliage presenting an 

 exact balance between the raspberry and the 

 blackberry. 



The berries are not of great commercial value, 

 as the fruit though large is soft. I hope, however, 

 to harden the berry by selective breeding, and in- 

 troduce a better flavor. 



Although this hybrid progeny of raspberry and 

 white blackberry may ultimately have commer- 

 cial importance, it is chiefly prized for the scien- 

 tific significance of its revelations. 



Descended as it is from a cross between the 

 raspberry and the blackberry, it constitutes a fixed 

 species differing radically from every other Ru- 

 bus known. 



So in this regard the Paradox takes its place 

 besides the Primus and the Phenomenal berries as 

 offering an impressive object lesson in the pro- 

 duction of new species by hybridization. Let it 



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