260 LUTHER BURBANK 



There has been occasion in an earlier chapter 

 to tell of hybridizing experiments in some re- 

 spects even more curious, in which the raspberry 

 was fertilized with pollen of the strawberry. 

 These experiments will be further examined in a 

 later chapter, with reference to the interpretation 

 of the observed phenomena of hybridization of 

 the various brambles. 



But perhaps no comment could greatly add to 

 the impressiveness of the simple recital of facts 

 as to the production of new forms that, according 

 to all botanical standards, rank as distinct fixed 

 species, through the purposeful blending, under 

 the hand of the plant developer, of the germinal 

 strains of the various blackberries and rasp- 

 berries. 



The chances of obtaining results 

 in plant improvement are directly 

 proportionate to the number of ex- 

 periments tried; and a hundred 

 thousand experiments may be con- 

 ducted as simply as a few. 



