LUTHER BURBANK 



united, racial traits that are reminiscent of the 

 old days when the northern hemisphere enjoyed a 

 tropical climate may be revived, and a tendency 

 to repeat a gigantic growth that characterizes 

 ancestors vastly remote will be revealed. 



Such, I take it, is the explanation of the strange 

 and otherwise inexplicable phenomena of gigant- 

 ism manifested by my hybrid walnuts. And such 

 is our warrant for believing that all other species 

 of native trees have possibilities of development 

 that are unrevealed in the exterior appearance of 

 their present-day representative, and that can be 

 revealed, so far as we know, only by hybridization. 



New hybrids must be pro- 

 duced by the union of varied 

 species of pines t oaks and 

 elms, and other shade and 

 ornamental trees, to give di- 

 versity to the landscape and 

 to supply different types 

 of wood for use of car- 

 penters and cabinet-makers. 



