8 



jb:ow to destroy ixsects. 



female^ after laving her egg^ die?^ and becomes covered 

 with a white woolly snl)stance as a protection to her 

 eggs. 



Tobacco-smoke, if dense enongh^ will destroy thrips, 

 but they take more of it than the common green fly. 



With only a few plants the trouble is to administer it 

 thick and long enough. In the greenhouse there is no 

 trouble, as the house is filled and the smoke left until it' 

 finally disappears. 



It probably will be more convenient to give them a 

 sprinkling or syringing with tobacco-water, made by 

 putting a tew stems or other tobacco into scalding hot 

 water (enough of the former to make tlie liquid a light 

 brown)^ then add soap enough to mak(? a strong suds. 

 This will, if administered as directed, finish the pests 

 in quick order. 



THE APHIS, OR GREEN FLY, 



Is larger and more easily seen than the red spider. 

 A good, simple remedy, sufiicient for purposes of most 

 window-gardeners, is as follows : 



Take some tobacco, put it in some water, and let it 

 soak until it looks like strong tea. The proportions 

 may be about one-fourth of a pound of tobacco to three 

 or four quarts of water. This may be apphed witli a 

 syringe. A brush or a sponge may be dipped into tlie 

 tobacco-water and used to brush them off. Small 

 plants can be plunged into it, the top downward. 



