70 



Although syringing and steaming, duly regulated, 

 are unexceptionable practices occasionally ; yet, as 

 before observed, they are not to be depended upon 

 solely as the means of keeping the air of the hothouse 

 in a proper state of moisture, in conformity with the 

 natural laws already pointed out. Gardeners know 

 this from their experience, and have adopted, conse- 

 quently, several modes of keeping the moisture of the 

 air always accordant with its temperature. The most 

 efficient plan we have previously described, but 

 another is as follows : 



