SOME EXPERIMENTS OF LUTHER BURBANK. 213 



" Animals or plants changed by transference from one country to 

 another never quite go back to the old conditions, even if placed in them 

 again, as hereditary tendencies acquired under the new environments, 

 even though latent for many generations may be called forth again 

 under favoring conditions. Exceptions seem to be as important as the 

 rules in this work. Nature leaves so many loopholes that there is 

 almost no rule without exceptions. She does not tie herself up to any 

 unvarying conditions. Adaptability is more important than persever- 

 ance." 



A blackberry plant with an immense mass of fruit developed from 

 a seedling from the Himalayas. One plant covers 150 square feet, is 

 8 feet high, and has a bushel or more of fruit. This is only a young, 

 small plant ; when full grown this variety is many times larger. 



Apples — all Seedlings from One Variety, 'The Early Williams,' showing about the 



Normal Variation of Apple Seedlings. 



