﻿OF THE STATE ENTOMOLOGIST. 



115 



[Fig. 21.] gu^ jQot to weary with details, I here reaffirm my 



belief, strengthened by each further observation, and 

 by every additional experience of the past year, that 

 just as the working of the root-louse is the primal cause 

 of failure of some of our choicest varieties of the Grape 

 vine, so in judicious grafting we have the most avail- 

 able means of counteracting its work, and of thus grow- 

 ing successfully many of those kinds which cannot be 

 grown in this latitude with any profit or success on their 

 own roots. 



The recommendation to use our most resistant vari- 

 eties as stocks for the French vines in the districts rav- 

 aged by the Phylloxera have already been followed by 

 large demands for such varieties by the people of those 

 districts, and while we yet scarcely know how our vines 

 will act under the new conditions in which they are 

 placed, the uncertainty as to the results of judicious 

 grafting here at home, scarcely presents itself, for everything augurs 

 favorably. 



I have not, in the foregoing paper, entered into the discussion of 

 the special influence of the graft on the character of the root, and vice 

 ^ersa ; because I believe that, while the one doubtless does manifest a 

 -certain special influence on the other; yet, for practical purposes, we 

 know that it is so slight as hardly to be worth considering in this con- 

 nection. The infiuences of the one on the other are almost entirely due 

 to the abundance or lack of nutrition in the root, and present in the 

 graft no other changes than those of greater or less development in 

 the different parts of its growth ; and not in the specific character or 

 •quality of the fruit. Geo. Gallesio, in his work on the Orange Family, in 

 which he fully considers the influence of grafting, lays stress on these 

 'facts. 



In conclusion, I again appeal to those of my grape-growing readers 

 who have the opportunity, to make experiments in grafting the more 

 susceptible on to the roots of the more resistant varieties, and, as a 

 guide, I repeat the following list of varieties that it is desirous to test 

 .as stocks and as grafts : 



ROOTS TO USE AS STOCK. 



Concord. 

 Clinton. 

 Heibemont. 

 Cunninffliam. 



5. Norton's Virginia. 



6. Kentz. 



7. Cyntliiana. 



8. Taylor. 



