LUTHER BURBANK 



fruit is regarded by the orchardist as an inde- 

 pendent variety, owing to the fact that it may be 

 propagated indefinitely by division or by grafting. 



"A million new kinds" refers to the endless 

 diversity of individual forms among hybrid black- 

 berries and raspberries, from among which a score 

 or so had been selected as worthy of introduction. 

 It should be added, however, that certain of these, 

 including the Primus berry and the Phenomenal, 

 were fixed varieties or new species that would 

 breed true from the seed. 



In another clause reference is made to "four- 

 teen years" of experiment, revealing the fact that 

 the blackberries and raspberries were among the 

 plants that Mr. Burbank had found time to experi- 

 ment with extensively during the ten year period of 

 the nursery experience that preceded the establish- 

 ment of his experiment gardens. 



It was partly because these fruits had been 

 experimented with for this long period that so 

 large a section of New Creations was devoted to 

 new races of hybrid berries. 



It should not be understood, however, that the 

 work with the blackberries and raspberries stood 

 at all by itself in presenting evidence of the fer- 

 tility of hybrids, and in thus throwing new light 

 on the problems of evolution. 



On the contrary, evidence of precisely the same 



[186] 



