126 NUT GROWING 



ful breeding. When small groups were selected by 

 ranchmen for propagation it was found necessary to 

 exchange breeding animals with men who had other 

 small herds. This seems to be a parallel case with 

 the hazels, which bear heavily when there is exten- 

 sive cross pollination. A single hazel bush set out 

 at a distance from its friends becomes so lonesome 

 that it is not much interested in continuing its kind. 

 We must cater to the sociability of the trees and 

 plant individuals of several varieties within hailing 

 distance of each other. 



Hybrids belong to three chief groups. The hetero- 

 dynamic hybrids are those which represent one or 

 other parent prominently, and this sometimes occurs 

 to such an extent that we may not know whether a 

 tree is a hybrid or not until it comes into bearing. I 

 had one series of trees resulting from the placing 

 of American chestnut pollen upon pistillate chinka- 

 pin flowers which showed chinkapin characteristics 

 so distinctly in progeny that I believed them to be 

 parthenogens (one parent only) and not real hybrids. 

 A number of them were set out on a side hill and 

 practically forgotten, but when they came into bear- 

 ing the fruit showed distinctly that these young 

 trees were hybrids. At the present time I have also 

 a large number of what appear to be butternut par- 

 thenogens, yet some of them may prove to be hybrids 

 when they come into bearing. Homodynamic hybrids 

 are those in which we have an equal or nearly equal 

 combination of the characteristics of both parents, 

 although with homodynamic hybrids attributes of 



