54 STRUCTURES ADAPTED TO PARTICULAR PURPOSES. 



2. Graperies, Orangeries, fyc. These we have distin- 

 guished from forcing-houses, as not being stimulated before their 

 natural season of growth, artificial heat being sometimes applied, 

 however, for their protection from early frosts in spring, and for 

 ripening the fruits or accelerating the maturation of the current 

 year's shoots in autumn. 



A greater latitude may be taken, in the construction of houses 

 of this class, both as regards extent and ornament. Here the 

 taste and wealth of the proprietor may be indulged to any 

 degree. These structures may vary in length from 30 to 100 

 feet, or more, although we prefer them to be limited to the lat- 

 ter dimensions, adding others of different proportions, rather 

 than continue the unbroken flatness of the roof beyond this 

 extent. 



Fig. 14 represents a range of houses of this class, erected by 

 John Hopkins, Esq., in the gardens of his splendid country-seat 

 at Clifton Park. This is one of the most extensive structures 

 of this kind yet erected in this country. It is three hundred 

 feet in length, by twenty-four in breadth. The structure is 

 divided into three compartments of one hundred feet each ; the 

 centre compartment, which is larger and loftier than the others, 

 is appropriated to the growth of orange trees planted in the 

 ground, which, in a few years, will form a complete orchard of 

 orange and lemon trees. 



The site of these houses is one for which nature has done com- 

 paratively little, but for which art and outlay have done much, 

 and for which the taste and munificence of the proprietor are still 

 doing more ; but, like many other structures which have come 

 under our observation, they contain much inferior glass in the 

 roof-sashes, which is very injurious to tender foliage. Bad glass 

 is an abundant material in the United States, and is generally 

 used by tradesmen, who do the work by contract, on account of 

 its cheapness. This is a matter which demands particular 

 attention from those erecting horticultural buildings ; otherwise, 

 they may not discover the error, until too late to prevent it. 



Fig. 15 is a representation of a model house for growing 

 grapes on the lean-to or single-roofed system; and, both in 

 regard to its dimensions and slope of roof, is just such a struc- 



