144 UNIVERSITY OF CALIFORNIA EXPERIMENT STATION. 



its habits a Eiparia. It was at one time much used as a stock, but 

 its resistance to Phylloxera is insufficient. In California vines grafted 

 on Solonis have been so weakened by Phylloxera as to be useless. Its 

 only use is for wet, sandy soils, where it gives good results. 



The good qualities of Solonis are found in certain of its crosses with 

 Riparia, of which the most promising for California is 1616. 



FIG. 8. Berlandieri Resse'guier No. 1. One half natural size. 



Solonis X Riparia 1616 (Fig. 11). This variety is very vigorous, 

 and the cuttings root and graft well. It is sufficiently resistant to 

 Phylloxera, and is to be recommended for sandy and especially wet 

 soils. Vine fertile, producing small, round, black grapes. 



Eiparia X Rupestris-Cordifolia 106 8 -(Fig. 12). This variety is 

 vigorous and thoroughly resistant to Phylloxera. It is particularly 

 recommended for stiff clay soils which become hard after rain and 

 easily dry out. It is in just such soils that Rupestris St. George and 



