BOTANICAL STRUCTURES. 



299 



deed assume any form ^YhIch taste can suggest, provided 

 there be a sufficiency of light, and the plants be not teo 

 far from the glass. The Jieath-house does not essen- 

 tially diifer from the green-house ; but for it a span- 

 roof is decidedly preferable, and provision should be 

 made for the most thorough ventilation. 



In the Oonservatori/, the chief plants grow in beds of 

 earth sunk in the floor. The following figure shows 

 the principle of this species of house. The beds, marked 



Fig. 19. 



h 5, are" filled with a light soil, calculated for the plants 

 which are to inhabit them. This figure represents the 



Fis. 20. 



front elevation of the roof. Numerous varieties of this 

 structure also Imve appeared, and some most siimptuous 

 examples have been erected in the gardens of the 

 opulent. With similar restrictions as in the green- 

 house, the conservatory may bo said to be capable of 

 assuming any form. Ornamental climbing plants are 

 generally trained under the rafters, with a fine effect ; 



