THE GREEN-HOUSE. 



11 



Sect. III. Form of the Green-house. 



The form of the green-house comes next in order, 

 and depends on various considerations, as to mode of 

 culture, harmony with the architecture of the house 

 light, heat, air, rain, &c. 



There are two modes of cultivating plants in 

 green-houses : one, and the most usual mode, is, 

 by growing them in pots ; and the other is by 

 growing them in beds or borders of soil, as shrubs 

 or other plants and trees in a shrubbery. When 

 this last mode is adopted, the magnitude of the 

 structure is required to be larger than for a green- 

 house of pots, and the form must be such as to admit 

 of the roof being removed in the summer season, to 

 give the plants the benefit of the direct influence of 

 the sun and the weather. It is of importance to be 

 impressed with this fact, that unless the roof of a 

 conservatory can be, and is removed every summer, 

 the plants within will soon become naked and un- 

 sightly below ; nor will any mode of pruning or cut- 

 ting down prevent this result of the want of air, 

 wind, and the direct influence of the sun. As straight 

 lines, whether in metal or timber, are easier put 

 together, or separated, than crooked or curved lines 

 of any description, it is evident that a parallelogram, 

 or some other right-lined figure, must be the best for 

 the conservatory. 



A green-house appended to a dwelling-house 



