LUTHER BURBANK 



be recalled, however, that the Primus was a first 

 generation hybrid, whereas the Phenomenal ap- 

 peared in the second generation, and the Paradox 

 in the fourth. 



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, should rank as distinct 

 fixed species, through the purposeful blending, 

 under the hand of the plant developer, of the ger- 

 minal strains of the various blackberries and 

 raspberries. 



The chances of obtaining 

 results in plant improvement 

 are directly proportionate to 

 the number of experiments 

 tried; and a hundred thousand 

 experiments may be con- 

 ducted as simply as a few. 



