346 



ON THE CULTURE 



the mixture recommended for the Pine insects, 

 and which should be kept warm during the oper- 

 ation. The top of the plant need only remain a few 

 seconds in the mixture, and it should then be 9et 

 in a close shady place, (a green-house is very 

 proper in an evening after the sun is gone off the 

 windows,) to prevent its drying too rapidly. 



Two or three days after the operation, the top 

 of the plant should be refreshed with clean water ; 

 and from that time a gentle sprinkling may be 

 given it constantly, which will greatly accelerate 

 its growth. 



The Acari most generally reside on the under- 

 side of the leaves of plants, and when they are very 

 numerous, they work so thick a web thereon, that 

 it sometimes prevents the mixture from entering 

 into certain hollow parts of the leaves of some 

 kinds of plants, by which means a few insects escape 

 unhurt ; in which case it will be proper for the 

 plants to undergo the same operation the succeed- 

 ing evening, which will most assuredly destroy all 

 that have escaped the former operation. 



I have taken the liberty to mention this par- 

 ticular, lest some persons might condemn the 

 method here recommended as ineffectual, without 

 taking the trouble of attending to the cause of its 

 failure. 



Large, or climbing plants, when their leaves 

 are large, as for instance, the Vine, must be dressed 

 with the mixture by means of a sponge : this has 

 the appearance of a tedious operation ; but in a 



