2-24 CULTIVATION. 



they only require the ordinary care of frequent 

 watering, picking, and keeping in due position 

 against wind. They should be set on reversed 

 pans, tiles, or on some compact level surface, 

 formed of lime and coal ashes, to prevent earth- 

 worms entering the pots. And if, as is often 

 the case, they are set on sand, gravel, or on the 

 common soil, the roots speedily find their way 

 through the bottom, and consequently require 

 to be frequently moved, to prevent the roots 

 establishing themselves in the ground, which, if 

 once allowed to do, and afterwards rudely torn 

 from their hold, checks and deranges the growth 

 very much. 



The next affair of importance is the getting 

 the collection replaced in the house before the 

 frosts and inclement weather of autumn set in. 

 There is no circumstance in nature which seems 

 to give notice of the decline, as we have of the 

 advance, of summer, save the general pause in 

 vegetation ; which, however, has nothing to do 

 with the commencement of frost. I have known 

 great damage done to green-house plants by a 



