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even of climate vary in California as well as in any country with 

 summer rains. It is for every vineyard owner himself to find 

 out, which is -best for his special conditions. 



Of the resistants on hand at present the Rupestris St. George 

 is probably the one which has the greatest usefulness, at least 

 for the Coast mountain region, the only one, with which I have 

 acquaintance. . With the proper graft it seems to hold out well 

 on a good many kinds of soils, especially deep gravelly ones, 

 'excepting those exceedingly rich or moist, where its growth is 

 too rank, while the vine is healthy. Although it resists well 

 against the disease on clays, it is not a good success on such soils 

 for other reasons, as lack of vigor and inferior quality of fruit; 

 but with a favorable graft it will even do fairly well on clays, if 

 these are not overly stiff. Whenever a resistant stock has not 

 a perfect adaptation to a soil or climate, extreme care must be 

 taken in the selection of the graft; if the adaptation is perfect, then 

 this is not quite so essential. The Rupestris St. George has a 

 misleading name. It undoubtedly belongs to the Champini 

 group of vines, which are hybrids between Candicans, Monticola 

 and Rupestris, but not always showing their relation to each of 

 these species. While the other Champinis take considerably in 

 their growth habit after their sluggish-growing parents, the Ru- 

 pestris St. George has its growth habit almost entirely from Ru- 

 pestris, but with a much longer seasonal activity and with the 

 form of root system and the fleshy roots of the Champinis, as de- 

 veloped by nature. 



With Riparia-Rupestris 3,306 I have but little acquaintance, 

 but if it is a hybrid between Riparia and Rupestris St. George, 

 it would explain its resistance to root-rot in France. Although 

 the Rupestris St. George has not this quality, some of its parents 

 have. If the origin, of Riparia-Rupestris 3,306 is as stated, it 

 will give this vine very likely value for the richer or moister 

 soils, on which the Rupestris St. George succumbs. The two 

 mentioned stocks are supposed to be perfect resistants against the 

 Phylloxera, although this would depend also on other conditions, 

 as explained above. 



Of stocks which are more sluggish growers than the Viniferas, 

 we have the Lenoir and Champinis. The former ungrafted is 

 the hardiest and healthiest vine for California for all soils from 

 medium to rich. It has some value as a direct bearer, as it pro- 

 duces fairly good crops, its grapes containing a good deal of 

 coloring matter, useful in the making of red wines. As a grafting 



