544 GRAPE DISEASE. 
roots affected but moderately. Diana—No leaf-galls, but plenty 
of root-lice. 
V. vulpina (Southern Fox or Muscadine)—As it is not grown 3 
in this locality, being considered absolutely worthless here, I know 
little about it. 
From this experience it would, appear that no vines of those 
named, are entirely free from the attacks of the root-louse; but 
that the European varieties are most susceptible to it; the 
Northern Fox, next in order, the River Bank grape next, and the 
Summer grape being the least affected. It would likewise appear- 
that galls are occasionally found on all of the species except the 
European, and as they have, in a few instances, been found on this 
species in Europe, it cannot be considered entirely exempt.” 7 
Nevertheless, in general terms, the River Bank grape must beai 
sidered the species which the gall-louse prefers. Experience on 
this point will, no doubt, vary in different parts of the country, and ; 
more extended experience may modify some of these deductions. 
We thus see that no vine, whether native or foreign, is exempt 
from the attacks of the root-louse. Yet, on the principle pek 
small dose of poison may prove harmless or even beneficial pared 
an over-dose will kill, we find that a small number of en 
produce no serious effects upon a vine; and that it is only ee 
they are very numerous, and cause not only the fibrous roots a 
even the larger ones to waste away, that their evil piee 
perceptible. With most of our native vines when the condi 
are normal, the disease seems to remain in the former mild pee 
and it is only with the foreign kinds, and with a few of the v 
under certain conditions, that it takes on the more acute form. 
In France, according to M. Laliman, the American Taylor, 
which have resisted the root-louse best are the oine Be 
Herbemont (known there as Warren), and some others whic® 
considered valueless here, such as the Pauline, Eleimbomys hie 
Mustang of Texas, and a kind of York-Madeira ; while those " 
succumb are the Isabella, Scuppernong, Concord, 
_ ginia, Maxatawney, Hartford Prolific, Cynthia, etc. ea 
ence differs a little from ours, but shows that the Labruscas 
most there also. — To be continued. 
e 
*Since this was written I have been informed by Mr. be gine Nana 
Agriculture, that the leaves of certain European vines, in green as late 
‘amburg and Madam Pince, were crowded with the galls, + cael 
cat Hi 
and they had begun to spread on to the Sonora and the Due de Mi 
