62 MANUAL OF MODERN VITICULTURE. 



Salt is also an objectionable substance in soils, and, if the 

 proportion of it is large enough, may render soils unfit for 

 vegetation. 



The graft-bearer, withstanding the greatest percentage of 

 this substance is the Solonis, and it is alone used for recon- 

 stitution in the saline soils of the Aude and the Pyre*nees- 

 Orientales. As it is impossible to use any other stock, one 

 does not take into account its resistance to phylloxera, 

 which, however, is not of such great importance in this case, 

 salt soils being unfavorable to the development of the 

 insect. 



To sum up, the following isa list of the soils in which 

 certain American vines may succeed : 



1st. Fresh, fertile, deep soils, containing less than 25 per cent. 



of limestone : Riparia Gloire de Montpellier, and R. Grand 

 Glabre. 



2nd. Fresh soils but slightly fertile, and of little depth, 

 clayey, containing less than 25 per cent, of limestone : 



Rupestris Martin. 



3rd- Clayey soils, not too damp or not too pebbly, poor, con- 

 taining up to 40 per cent, of limestone in the south 

 and 25 per cent, in the west of France, or up to 80 per 

 cent, in certain well-drained tufas : Rupestris du Lot. 



4tb. Clayey soils more or less damp, containing up to 40 per 

 cent, of limestone : Riparia X Rupestris, No. 101-14, 3306, 



5th. Calcareous soils of a chalky nature, pulverized white 



marl, &C : Berlandieris. 

 6th. Salt soils, Or pourridti soils : Solonis. 



