THE GRAPE. 807 
CULTURE UNDER GLASS, wITH FIRE-HEAT. As the foreign 
grape is almost the only fruit of temperate climates, which can- 
not be raised in perfection in the open air in this climate, we 
shall give some concise directions for its culture in vineries 
with artificial heat. Those who only know this fruit as the 
Chasselas or Sweetwater appears, when grown in the open 
air, have little idea of the exceeding lusciousness, high flavour, 
size,and beauty of such variéties as the Black Hamburgh or 
Muscat of Alexandria, when well grown in a first rate. vinery. 
By the aid of artificial heat, which, in this climate, is, after all, 
chiefly required in the spring and autumn, and to counteract 
any sudden cold changes of atmosphere, this most. admirable 
fruit may easily be produced for the dessért, from May till De- 
cember. Indeed by vineries constructed in divisions, in some 
of which vines are forced and in others retarded, some gentle- 
men near Boston, have grapes nearly every month in the year. 
Construction of the vinery. The vinery with fire-heat may 
be built of wood, and in the same simple manner as just de- 
scribed, with the addition of a flue above the surface of the 
ground, running close along the end, two feet from the front 
wall, and about a foot from the back wall, and returning into a 
chimney in the back wall over the furnace. 
For the sake of permanence, however, a vinery of this kind 
is usually built of brick; the ends and front wall eight inches 
thick; the back wall a foot thick—or eight inches with occa- 
sional abutments to increase its strength. In fig. 92 (I) is shown 
: _ —. @ simple plan of a 
vinery of this kind. 
In this the surface 
of the ground is 
~ shown at a, below? 
which, the founda- 
| tion walls are sunk 
' three feet. Above 
thesurface the front 
wall 0}, rises two 
feet, the back wall 
c, twelve feet, and 
the ‘width of the 
house: is fourteen - 
feet. On these walls 
are placed the raft- 
ers, from three to 
four feet distant, 
with the sashes in 
