150 



of summer, when other flowers are rather 

 scarce. 



There is also frequently introduced into these 

 departments, a variety of aquatic plants, such 

 as Nymphaea, Menyanthes, Aponogeton, &c. 

 for the reception of which, cisterns are contrived 

 within the house to be supplied by the rain 

 falling on the roof or otherwise: also china 

 vases, or tubs painted in a fanciful manner. 



These plants should be potted in rich earth 

 and moderate sized pots, to be set on the bot- 

 tom of the vase, tub, or cistern, and then cover- 

 ed with water, sufficient to allow the leaves to 

 float freely on its surface, a smail but daily 

 supply of fresh water, and occasional clearing 

 from slime or other dirt that happens to ac- 

 cumulate, is the only care they require, which 

 trouble, they will amply repay by their beauty 

 and fragrance. 



Such comprehensive directions having been 

 given already for the general management of 

 the green-house, and they answering in every 

 respect for this department, it is quite unneces- 

 sary to enter into a repetition of these parti- 

 culars here, as they, combined with what I 

 have here directed, will fully enable those 



