ON THE RASPBERRY 



fer, Philadelphia, and Gladstone are, at least in 

 part, probably of this origin, as was the historical 

 English red. The Purple-cane was a native of 

 the northeastern part of the United States, being 

 especially common in New York. 



The original American red raspberry, Rubus 

 strigosus, first became known to the horticultural 

 world in 1860, through the introduction of Allen's 

 Antwerp and Allen's Red Prolific. 



For several years preceding 1880 I had been 

 raising seedlings of blackberries, raspberries, 

 gooseberries, Juneberries, strawberries, currants, 

 and various other berries on my experiment farm, 

 and many variations were developed in that way 

 which aroused my enthusiasm. 



These experiments were largely instrumental 

 in teaching me the then not known or not gener- 

 ally accepted value of cross-pollenizing as the 

 means of introducing the tendency to vary among 

 existing species or varieties. And my experiments 

 with the different raspberries had a prominent 

 share in the demonstration of this very important 

 and hitherto unappreciated principle. 



In the course of these experiments it was first 

 found that the black-cap would cross with the 

 red raspberry, although with difficulty. 



Seedlings from this cross sometimes bore per- 

 fect berries abundantly, but much oftener they 



[43] 



