THE GREEN-HOUSE. 



13 



on the green-house. The form of the heads of the 

 doors and windows, peculiar to the different orders 

 of Gothic architecture, can readily be imitated in the 

 front sashes and doors of a green-house (fig. 5.) ; and 

 in the case of Grecian architecture, the mouldings of 

 any of the orders are readily applied to the styles, 

 rails, and bars, and to the standards and other posts : 

 and even columns may be introduced in very consider- 

 able erections. 



Fig. 5. 



But the grand point which influences the form of 

 a green-house, as it does also its situation and position, 

 is the necessity of admitting the full influence of the 

 sun. For this purpose the roof, on the side next the 

 south, at least, and if possible on the east and west 

 sides, must be wholly of glass. It was formerly the 

 custom to form the roofs of green-houses of opaque 

 materials ; but this description of architecture, as well 

 as the culture of green-house plants, was then in its 

 infancy. The sickly condition of plants wintered in 

 such of these houses as still exist in this country, 

 affords evidence of their unfitness for the purpose for 

 which they were intended. 



As it is found necessary to have the roof and ends 



