1 6 The Horticulturist's Rule- Book. 



Soda and aloes, continued. 



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 1% gal- 

 lons whale-oil soap. Used as a winter wash for scale. 

 Apply at a temperature of about 130° Fahr. 



Soda wash. — Dissolve J£ pound of common washing-soda in a 

 pail of water. For scale and borers. 



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 sul- 

 phide — well, and allow them 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 deciduous trees in summer. (Cali- 

 fornian.) 



Sulphur. — Fumes of sulphur is destructive to insects, but 

 should be carefully used or plants will be injured. For 

 greenhouse use, few insecticides are superior. The sulphur 

 should be evaporated over an oil-stove, until the room is 

 filled with the vapor. The sulphur should never be burned, 

 as burning sulphur kills plants. 



Sulphur and snuff. — 1 pound of flowers of sulphur, 1 pound of 

 Scotch snuff, 1 pound of quicklime, pound of lamp-black, 

 1 pound of soft soap, with sufficient water to make them into 

 the consistency of paint. Wash every branch, from the 

 grounds upwards, with a common paint-brush before the 

 blossom-buds begin to swell. For plant-lice. 



Sulphur and whale-oil soap wash. — Boil 1% gallons of water, add 

 % pound of sulphur and boil 15 minutes. To this add a 

 pound of whale-oil soap and boil for five minutes. Let stand 



