Insecticides. 15 



Soap and lime wash, continued. 



lard mixture. Dilute by adding 2 gals, of boiling water 

 for each gallon of the mixture. It will keep indefinitely. 

 For preventing the attacks of borers. 



Soap and soda wash. To soft-soap add a strong solution 



of common washing-soda, until the mixture becomes a 



thick paint. 

 Soap and tobacco. Dissolve 8 Ibs. of the best soft soap 



in 12 gallons of rain water, and when cold add i gallon of 



strong tobacco liquor. For plant lice. 



Soda and aloes. Dissolve 2 Ibs. of washing soda and i 

 oz. of bitter Barbadoes aloes, and when cold add i gallon 

 of water. Dip the plants into the solution, and lay them 

 on their sides for a short time, and the insect will drop off. 

 Syringe the plants with clean, tepid water, and return to 

 the house. For plant lice. 



Soda and resin wash. Salsoda, 3 Ibs., added to i pint of 

 hot water ; add slowly 4 Ibs. of resin, and gradually add 2 

 pints of hot water. Dilute to 5 gallons. For scale in- 

 sects ; also recommended for curculio. 



Soda wash. Dissolve l / 2 pound of common washing-soda 

 in a pail of water. 



Sulphide of soda wash (Hilgard's). Dissolva 30 pounds of 

 whale-oil soap in 60 gallons of water, by heating the two 

 together thoroughly. Then boil 3 pounds of American con- 

 centrated lye with 6 pounds of sulphur and 2 gallons of 

 water. When thoroughly dissolved it is a dark brown 

 liquid, chemically called sulphide of soda. Mix the two 

 the soap and the sulphide well, and allow thefn to boil 

 half an hour. Then add about 90 gallons of water to the 

 mixture, and it is ready for use. Apply it warm, by means 

 of a spray pump. Used warm, its effect is better and less 

 material is required than when cold. For scale on decid- 

 uous trees in summer. (Californian.) 



