THE GRAPE. 



307 



CULTURE UNBSR GLASS, WITH FIRE -HEAT. As the foreign 

 grape is almost the only frn.it 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 varieties 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 dessert, 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 



a 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 

 the surface the front 

 wall b, 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- 

 <t ers, from three to 

 four feet distant, 

 with the sashes in 

 Fig. 92. Plan and section of a vinery, with fire-heat, two lengths. 



In the present example the flues are kept out of the way, and 

 the space clear, by placing them in a square walled space, di- 



