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vigorous, even for the strong-growing species to which it belongs, 

 and imparts its vigor to vines worked on it. Where hardiness is 

 a factor in grape-growing, this stock should prove of value. As 

 with all Riparias this variety grows readily from cuttings and 

 makes a good stock for grafting, uniting freely and usually per- 

 manently with other species. Riparia Gloire, as are all of its 

 species, is very resistant to phylloxera. The principal defect of 

 this stock in California and Europe is that it is very particular as 

 to soils. In our ow^n experiment, there is a tendency for the cion 

 to overgTOW the stock. 



Clevener. — This variety is a well known wine-grape in I^ew 

 York. It is a hybrid between Vitis labrusca and Vitis riparia 

 with some characters suggesting that one of its parents might 

 have blood of Vitis cestivalis. The vine is a rampant grower, 

 hardy, succeeds in various soils and is probably adapted to a 

 greater range of soils in this region than either of the other stocks 

 discussed. It unites readily with other grapes and bears its grafts 

 well. Although not tested thoroughly as regards phylloxera, it is 

 probably as resistant as Riparia Gloire. In the past this has been 

 considered the standard stock upon which to graft in this State. 



Varieties used as grafts. — The varieties used as grafts in the 

 experiment are, with one or two exceptions, the grapes most grown 

 in commercial and home vineyards in iSTew York. The selection 

 of these varieties out of hundreds from which to choose, was dic- 

 tated by varied considerations, chief of which were defects in 

 adaptability to soil, climate and other environmental conditions 

 which it was thought top-working might overcome. The grapes 

 are so well known that there is no need of varietal description of 

 anv of them but all will be interested in knowing what considera- 

 tions led to the selection of each variety. 



Agaivam. — Agawam is the most wddely grown of Rogers' 

 hybrids in the United States. It does pre-eminently well, however, 

 only on heavy or clay soils and in many localities does not yield 

 satisfactorily. In severe winters it is precariously hardy in Xew 

 York. 



