14 HORTICULTURIST'S RULE-BOOK. 



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

 in 12 gallons of rain-water, and when cold add 1 gallon of 

 strong tobacco liquor. For plant-lice. 



Soap, fish-oil. Good potash lye, 1 pound ; fish-oil, 3 pints ; 

 soft water, 3 gallons. Dissolve the lye in the water, 

 and when brought to a boil, add the oil. Boil about two 

 hours. When cold, it can be cut into cakes. For use, put 

 the soap in enough hot water to dissolve or cut it, and then 

 add 6 to 10 gallons water to a pound of soap. For aphis. 



Soda and aloes. Dissolve 2 pounds of washing-soda and 1 

 ounce of bitter Barbadoes aloes, and when cold add 1 

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

 them on their sides for a short time, and the insects will 

 drop off. Syringe the plants with clean, tepid water, and 

 return to the house. For plant-lice. 



Soda and resin wash. Sal-soda, 3 pounds, added to 1 pint 

 of hot water ; add slowly 4 pounds of resin, and gradually 

 add 2 pints of hot water. Dilute to 5 gallons. For scale- 

 insects ; also recommended for curculio. 



Soda and whale-oil soap wash. Dissolve 25 pounds sal- 

 soda in 25 gallons water and heat to boiling, at which time 

 add \\ gallons whale-oil soap. Used as a winter wash for 

 scale. Apply at a temperature of about 130 Fahrenheit. 



Soda wash. Dissolve | pound of common washing-soda in a 

 pail of water. For scale and borers, on dormant wood. 



Spraying, a term applied to the application of liquid insecti- 

 cides or fungicides, by means of a pump or syringe. See 

 the various plants and materials for explicit directions. 

 Spraying must be thoroughly and opportunely done, else 

 it will fail. 



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

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

 together thoroughly. Then boil 3 pounds of American 

 concentrated 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 them to boil 



