CEPAGES. 141 



The European scion knits well, the trunk remains large, the 

 productivity is fairly great, and the maturation normal. It 

 knits well with all French varieties, even with Camay, 

 which is known to be one of the most difficult to 

 graft. 



The Vialla has rendered undeniable services in siliceous or 

 clay-siliceous soils, sound and rich, of the centre, north, and 

 south-west of France, but the writers are of opinion that for 

 the soils of these regions one may actually use graft-bearers 

 having an equal adaptation and a much greater resistance 

 to phylloxera, Rupestris du Lot, Rupestris Martin, for 

 instance. 



Franklin greatly resembles Vialla, and has, from the 

 points of view of adaptation and resistance, similar qualities 

 and defects, but is inferior in vigour. Ferrand's Michigan 

 is as vigorous as Vialla, and presents the same advantages; 

 as also the Oporto, which is, perhaps, superior in vigour as 

 well as in resistance to chlorosis, which its slight similarity 

 to Riparia explains. 



Several other hybrids of Riparia and Labrusca were 

 obtained in France ; they all have the same aptitudes as the 

 former, as well as similar defects, varying in intensity accord- 

 ing as they are nearer one or other of their procreators. 



Hybrids of V. Labrusca, V. Riparia, and V. 

 Rupestris. Obtained artificially in France. Their resist- 

 ance to phylloxera is greater than any of the previous, the 

 Labrusca forming one quarter only in their constitution. 

 They are not yet well known, and have so far only been 

 experimented with in chalky soil, where they become very 

 yellow. 



Huntingdon is a hybrid of this group, propagated in 

 several vineyards of the south-west and centre. This vine 

 resembles the Rupestris very much by its leaves and habit, 

 and the Labrusca by the disagreeable taste of its fruit. It 

 is fairly fructiferous, but slightly -vigorous only, and of no 

 value whatever as a direct-producer. It is not too much 

 affected by calcareous soils, and in some groies soils of the 

 Charentes it grows vigorously, when not grafted, and 

 unattacked by phylloxera. Its properties of adaptation 

 results most likely from the combination Riparia X Rupestris, 

 which intervenes in its formation. 



