PROPAGATION BY SEEDS. 60 



(these give practically the highest degree of resistance); 

 finally, those bearing numerous tuberosities. The larger and 

 the more penetrating these lesions are, the lower the variety 

 must be placed in the scale of resistance. 



A longer study made in different soils and climates 

 eventually enables the nurseryman to gather more exact and 

 complete data, but although it may result in his discarding 

 a few types which, for various reasons, do not show at first 

 very important lesions, it never results in his taking back 

 types eliminated after examination of the lesions of their 

 roots. 



To sum up, seedlings may be used to produce resistant 

 gnift-bearers in countries not yet infested with phylloxera ; 

 their other applications are rather within the domain of 

 nurserymen or amateurs than in that of vine-growers. 



