THE GARDEN BOOK OF CALIFORNIA 



the green fly is troublesome, and are easily applied to house 

 plants by means of a small syringe. Where scale has taken 

 possession of house plants it can be most easily removed after, 

 a treatment with kerosene emulsion. Where an effective 

 emulsion is desired for use on house plants it may be made in 

 the following manner: 



One part of slightly sour milk, two parts of kerosene; 

 churn together with a syringe or agitate with an egg-beater 

 until a white jelly shows that the two liquids are united. 

 Use one part of the jelly thus made to eighteen or twenty 

 parts of water and spray thoroughly over every part of your 

 plant. 



If a larger quantity of emulsion is desired for use on the 

 garden or out-of-door plants it may be made by the following 

 recipe, which is considerably cheaper than the one before 

 mentioned : 



Take of kerosene one gallon, of water half a gallon and 

 of soap a quarter of a pound (the common yellow laundry 

 soap will do) ; break or cut up the soap, add water and boil. 

 Remove from the stove, and, while boiling hot, add the kero- 

 sene, stirring or churning briskly for several mbutes. This 

 emulsion will be thick and creamy, and may then be diluted 

 to several parts of water, say twenty parts, for spraying. 



For "red rust" and other mildews or blights, the Bor- 

 deaux is the proper mixture. This may be purchased pre- 

 pared from almost any nursery, but the following directions 

 are given by authority as practical : 



Dissolve one pound of powdered copper sulphate in one 



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