332 LUTHER BURBANK 



ries varying in color from bluish to black. My 

 efforts with these species were mostly directed 

 toward increasing the size of the fruit. As just 

 stated, the results are quite noteworthy. 



But the experiments are still under way and 

 the ultimate possibilities of development are yet 

 to be revealed. 



These experiments in hybridizing the currant 

 have extended to all the species and varieties 

 that could be obtained. At times I have had five 

 thousand crossbred currant seedlings under 

 observation. 



In addition to the European and American 

 crossbred species, I have worked extensively on 

 varieties imported from Japan and China, and 

 from northern Asia and Russia. 



I have also crossed the currant with the goose- 

 berry, but the hybrids in this case produced no 

 fruit. Notwithstanding the large number of ex- 

 periments and their interesting results, I have 

 not produced any new currant that was thought 

 worthy of introduction. There is now under 

 observation, however, a hybrid seedling from the 

 Californian species already referred to Ribes 

 sanguineum, which is several generations re- 

 moved from the original, and which bears long 

 clusters of extremely large blue berries with few 

 seeds. 



