MORE ABOUT THE GRAPE-VINE PEST. 159 



date the rule that it is free from galls. So likewise the few exceptional 

 instances of the successful out-door growth of this in Missouri, which 

 have come to my notice, and which it is unnecessary to detail here, do 

 not affect the rule, and only prove that such vines can be grown out- 

 doors when not destroyed by Phylloxera. 



River-Bakk Grape {rijmria). — Alvey, «, 2 ; Corxucopia (hybrid 

 with vinifero)^ 0, 2 ; Clinton, c, 1, where the leaf-galls are very abun- 

 dant, the root-lice are generally less so, and vice versa. The roots 

 have such vitality that disorganization does not always seem to fol- 

 low the puncture of the louse, and new rootlets put out from the 

 swellings wath great vigor and thrift ; Dela^waee, J, 2 ; Golden 

 Clixtox, a, 1; Louisiax"a (some say a seedling of vinifera ; others, 

 again, believe it cestivalis), a, 1 ; Maeiox, 5, 1 ; Othello (hybrid 

 with vmifera)^ a, 2 ; Taylor, c, 1, much as with Clinton. 



Summer Grape {mstivalis). — Herbemont, cr, 1 ; Cuxxixgham, 0, 1 ; 

 Cyxthiaxa, a, 1 ; Norton's Virginia, 0, 1 ; Rulaxder. 0, 1 ; Tele- 

 graph, 0, 1. 



Northern Fox (Lahrusca). — Catawba, 0, 3, suffering almost as 

 badly as the varieties oi vinifera ; Challenge (hybrid with vinifera\ 

 0, 1 ; Creyeling, a, 2 ; Concord, a, 1 ; Diana, 0, 2 ; Dracut Amber 

 0, 1 ; Goethe (hybrid with vinifera), 0, 2 ; Hartford, 0, 2 ; Iona, 0, 3 ; 

 Isabella, or seedlings thereof, 0, 2 ; Israella, 0, 1 ; Ives, 0, 2 ; Mar- 

 tha, 0, 1 ; Northern Muscadine, 0, 1 ; Rebecca, 0, 2 ; Salem, 0, 2 ; 

 Wilder (hybrid with vinifera)^ 0, 1. 



Southern Fox (vulpina)^ 0, 0. — From the investigations of Prof. 

 Planchon, it results, as was anticipated from the great differences in 

 character which it presents, compared with the others, that this species 

 is entirely free from the Phylloxera in any form. The root is not only 

 very tough, but has a perceptibly bitter taste, which doubtless renders 

 it obnoxious to the insect. Prof, Planchon examined it thoroughly in 

 North Carolina, where other vines in the vicinity were suffering from 

 the insect. 



From the above enumeration w^e may gather that, with the excep- 

 tion of vulpina^ no species of cultivated vine is entirely free from the 

 attacks of either the gall-making or root-inhabiting types. Neverthe- 

 less vinifera is least and riparia most subject to the former; cestivalis 

 least, and vinifera most subject to the latter. 



Of vinifera^ a few varieties, under certain conditions, seem to ex- 

 hibit a power of resistance in this country; and it is singular that some 

 relative immunity has not as yet been noticed among the varieties of 

 this species in Europe. 



Of riparia, the Clinton, Taylor, Golden Clinton, and Marion, seem 

 best to resist. 



Of cestivalis, all the species enumerated resist well, and I would 

 especially mention Norton's Virginia, Herbemont, and Cunningham, 

 as vigorous growers. 



