i66 THE TREE BOOK 



The American walnut and the butternut have 

 never become articles of commerce. They con- 

 tain much oil, and unfortunately do not keep 

 very well The English or Persian walnut is 

 now grown profitably in California. It is a 

 tender tree, and cannot stand our northern win- 

 ters. The Japanese walnut, a tree of the but- 

 ternut type, has lately been introduced into this 

 country. It is hardier, and promises to become 

 quite a favorite, as the nut is said to be supe- 

 rior to our native butternut. 



Walnuts tend to vary and intercross, produc- 

 ing many hybrids. Horticulturists are con- 

 tinually experimenting with artificial crosses, 

 in the hope of finding new and better-keeping 

 varieties. While they are thus employed, "It 

 behooves us all," says Eogers, "to keep plant- 

 ing the old kiads, especially in areas from which 

 the trees have been taken. We may thus atone 

 for the sins of our forefathers, who stripped the 

 land of the first walnut crop and had not the 

 foresight to provide for another." 



The hickory is a natural born American. 

 The name "hickory" is of Indian origin. The 

 Indians prized the hickory nut highly, and al- 

 ways laid ia a big supply for winter. There 

 are nine different kinds of hickory trees, and 

 for some reason, Nature saw fit to place all but 



