HOW TO DESTROY INSECTS. 13 



each rose-bush was plunged (holding the pot inverted 

 in the hand), and kept there about a half-minute. 

 After plunging, the plants were set aside for a few 

 minutes, then dipped in the same way into clean water, 

 shaking them about thoroughly, washing the leaves, and 

 then returned to their former place in the house. 



" Whether it was the soap or the warm water that 

 killed the green fly I will not say, but there is one 

 thing certain they are all dead." 



Hot Water 



will destroy aphis instantly, without injury to the 

 plant, if not too hot. 



The maximum temperature may be as high as 156 

 Fahrenheit without any tear whatever, excepting upon 

 very tender plants. 



As a general rule, moisture is death to insects which 

 infest conservatory and window plants. 



While using hot water invert the pot, and hold the 

 earth from falling out with both hands under it, anci 

 dip the whole of the top of the plant into water heated 

 as high as 150. 



lobacco-smotoe 



is a certain cure. Put in a common flower-pot sau- 

 cer a few shavings ; on these, after you have set fire to 

 them, a small handful of tobacco-stems or leaves pr- 

 viously dampened ; place it close to the plant, in a 



