170 LUTHER BURBANK 



Thus there was no practical method of prop- 

 agating the pomato, the tubers being wholly 

 absent or merely rudimentary, and the seed not 

 producing a satisfactory uniform product. 



It is probable that if I could have found time 

 to continue the experiments, I should have been 

 able to fix the race through selection, and thus 

 have added a fruit of an altogether new variety 

 to the list of garden products. 



But to have done this would have necessitated 

 experiments on a large scale, requiring more time 

 than I could give at the moment. 



I think it not unlikely, however, that some one 

 will take up the experiment in future and develop 

 a fruit comparable to my pomato that will have 

 commercial value and be generally cultivated, 

 for there seems to be no reason to doubt that the 

 variety might be fixed with time and patience. 



SOME HYBRID BERRIES 



One of the most curious hybridizing experi- 

 ments ever conducted was made in an effort to 

 test the limitations of affinity between the various 

 members of the rose family. I had on my place 

 a bush of the California dewberry (Rubus viti- 

 folius), a plant that differs from most other 

 members of the family in that its staminate and 

 pistillate flowers are borne on separate plants. 



