SEED-GERMINATION AND SEEDLIXG-GROAVTH. 19 



with Onondaga scions the two varieties can be separated 

 in digging by inspection of the roots alone. 



The influence of the stock upon the top in root-grafted 

 trees is not so apparent; but in top-grafting on varied 

 stocks that are well established the effect on growth and 

 fruitage is often very striking. 



