CHAPTER X 



INSBOTICIDES, ETC. 



For Biting Insects 



For biting insects lead arsenate has now superseded 

 Paris Green, London Purple, and so on, since its use 

 is not likely to result in burning of foliage. It should 

 be purchased in the paste form, as that is far easier 

 to mix with water. 



Lead Aiisenate 



1 lb. paste. 



20-25 gallons water. 



Hellebore Powdee 



Hellebore powder is the powdered root of Verat- 

 rum album. It loses its poisonous properties on 

 exposure to air for some time, and is therefore 

 valuable where edible parts of plants need to be 

 sprayed against biting insects. Dust on dry while 

 dew is on the plants, or mix with water at the rate 

 of 1 oz. to 1 gallon. 



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