80 THE GRAPH, 
summer, and that which is given in the greatest ex 
tremes of forcing, will be subjected to as much if not mort 
of that element than is to be found in the very hottest 
parts of the world, in which regions our present subject 
does aot thrive; but in the most extreme cases, it is better 
to ccmmence anew when nature is so far exhausted as to 
be no further remunerative, and as in establishments where 
this is required, there are always sevaral houses at work 
there ‘2 no difficulty in having the worn-out lot replaced 
by another planting. 
Where grapes are required so early as above mentioned, 
it is necessary that the outside borders should have a share 
of attention, and we here take the opportunity of offering 
a few general remarks on this head. 
¥f we refer to those localities or climates where vegeta- 
tion prospers best, and to the most fruitful regions, we 
snall find that there is no great disparity in the average 
degree of heat between the atmosphere and the ground 
in which the roots of plants exist; consequently, there is 
a reciprocity, and an equal action, or equal quiescence 
over all parts. We know likewise from experience, that 
if the head of any plant were exposed to summer heat, 
and the roots in the cold of an ice house, prosperity could 
not long continue; in such a case, if it were positively 
seen, we should know the evil results that would follow, 
and alter the circumstances accordingly, yet strange to 
say, there are some men at the present day, strongly at- 
tached to planting the grape vine cutside of the house, 
and still stranger, the same persons are more particularly 
so when forcing is intended; such men will argue that in 
r, contrary to all true physiological 
