THE SUNBERRY 311 



serve the application of the Mendelian terms to 

 such types of inheritance as Mendel himself 

 studied, in which there was interplay of dominant 

 and recessive factors, and the varied segregation 

 of the different factors in new combination in the 

 second filial generation. 



Thus restricted, the Mendelian formula has in- 

 dividuality and specific meaning. 



There is danger that it may lose such individ- 

 uality and such specific meaning, and with these 

 a large measure of its real value and importance, 

 if the propensity of some present-day enthusiasts 

 to make the words Mendelism and Heredity 

 synonymous is generally followed. 



Be all that as it may, at least we hazard 

 nothing in saying that the case of the hybrid Sun- 

 berry, sprung at a bound into existence as a full- 

 fledged species, is of compelling interest to the 

 student of heredity, from whatever aspect he may 

 view the subject. 



Whatever else may be said of the 

 Sunberry, for or against, the fact 

 remains that it was a successful 

 union of two racial forms that were 

 separated almost to the point of 

 permanent segregation. 



