GRAPE DISEASE. 533 
they more generally do well when isolated in cold houses. But 
the general truth of the first statement holds good. It is also 
well known that some of our native vines, which for a while were 
universal favorites on account of their productiveness, vigor and 
other excellent qualities, have of late years sadly deteriorated. 
Among such the Catawba was for a long time the popular grape ; 
but its cultivation is now entirely abandoned in many parts of 
o the Mississippi Valley, and even at Hammondsport and other 
F parts of New York, and Nauvoo, Illinois, where it is still largely 
cultivated, I learn from experienced grape-growers that it is fast 
on the decline. , 
This deterioration — this failure, has been attributed to a variety 
of causes, for in the absence of anything definite and ascer- 
tainable to keep it within Fig. 127 
bounds, the speculative ees 
turn of our minds is sure ee 
one 
to have full scope, and n) 
grasping at every shadow 
of probability, leaves no A ark g; \ a 
Possible theory un- ae 3? r Soe 
searched. As in all such Get a a 
a 
a4 one a) = 
$+ Ia: 
Le 
fake aS ey 
Ty 
tý ey als q 
EAA 
diy OP 
t and mysterious 
change of climate we are 
at last Satisfied to attrib- Leaf covered with galls, 
me the change though, if the meteorological records were carefully 
examined, they would probably show no difference in the mean 
se Condition of our climate during the past half century. 
It is very natural to suppose that vines of European origin 
should be legs hardy in this country than our native varieties, 
that as in the case of the Spanish Chestnut, the English Goose- 
mrad » etc., etc., there is something in our climate which precludes 
i wishing as well here as there. I would by no means deny 
a is the case, for it is this very comparative tenderness 
berry UIRE them the more to the destructive agent of 
am about to speak. Yet when we consider that in some 
