534 GRAPE DISEASE. 
parts of Europe, where the Vine flourishes, the extremes of heat 
and cold are as great as here; that we possess a great variety o 
soil and climate, and that by covering and other modes of pro- 
tection in winter, we may, where necessary, counteract the rigor — 
Fig. 128, of the latter—it 
g would appear that — 
we certainly have — 
attributed too — 
much to climatic — 
influence: and — 
such a view is — 
strengthened by — 
the fact that our 
h 
Grape Gall-] mhe r 
newly hatched gall-inhabiting type, ventral view; e, ine to 
tion of a gall; g, the tubercled root-inhabiting form; /, : 
mother gall louse at the height of her fertility, ventral view; f, dor- parts, om 
sj , differently veined wings of the Oak Fes Learnt both- 
ella All these figures are greatly a the na adapted, an 
soil and climate, to the cultivation of the Vine. Lin Cal 
. ell in 
One of the reasons why the European vines peat 
outside of and beyond the more favorable clime Aig ie feci 
the continent is, no doubt, because the insect whit of the Roc 
them, like many other species common on this side 0° ©" — 
