By John Frederic Daniell, Esq. 27 



raised, and free ventilation allowed. When the pots in the 

 proper season are moved into the open air, it would eon- 

 tribute greatly to their health to preserve them from the 

 effects of too great evaporation, to imbed them well in moss 

 or litter : as a substitute for this precaution, the plants are 

 generally exposed to a northern or eastern aspect where the 

 influence of the sun but rarely reaches them, but which would 

 be very beneficial if their roots were properly protected. 

 The advantage of such a protection may be seen when the 

 pots are plunged into the soil, a method which communicates 

 the greatest luxuriance to the plants, but unfits them to re- 

 sume their winter stations. 



When a green-house is made use of, as it often is, after the 

 removal of the pots, to force the vine, the same precautions 

 should be attended to as in the management of the hot- 

 house, and the elasticity of the vapour should be maintained 

 by wetting the floor ; but after a certain period a great degree 

 of dryness should be allowed to prevail, to enable the tree 

 to ripen its wood, and form the winter protection for its buds. 

 In this its treatment differs from that of the tropical plants, 

 which require no such change, and to which, on the contrary, 

 it would be highly detrimental. The same observation 

 applies to forcing houses for Peaches, and other similar kinds 

 of trees. As soon as the fruit is all matured they should be 

 freely exposed to the changes of the weather. 



Upon an attentive consideration and review of the subject, 

 it appears to me certain that a frequent consultation of the 

 indications of the hygrometer is quite as necessary to the 

 Horticulturist as of those of the thermometer, and it is not 

 unworthy of the consideration of the Horticultural Society, 



