PAPER SHELL WALNUTS 49 



to early ripening of fruit, so that late bloomers 

 are adapted to growth relatively far to the 

 north. But this is exactly opposite with the 

 Franquette, this being a late walnut. 



But for the production of very hardy races 

 it is probable that hybridizing with the black 

 walnut, the same cross that produced the 

 Paradox, must be looked to, to supply the foun- 

 dation for a series of experiments in selective 

 breeding. 



The pioneer work has been done in the pro- 

 duction of the Paradox walnut itself. 



It may reasonably be supposed that further 

 experiments, in which this hybrid is used as a 

 parent, will lead to the development of alto- 

 gether new races of nuts that will have economic 

 importance. 



The entire matter of the development of com- 

 mercial nuts has only recently begun to attract 

 the attention of the growers. There is reason to 

 expect that the developments of the next few 

 generations will be comparable to the progress 

 of the past century in the development of 

 orchard fruits. 



