Diseases 267 



Kerosene Emulsion. Dissolve half-a-pound 

 of hard soap in i gallon of boiling water. 

 Add two gallons of kerosene to the hot liquid 

 and immediately churn with a syringe or force 

 pump till the mixture becomes creamy and all 

 the oil is thoroughly combined with the soap 

 solution. Properly made emulsion will not 

 show any free oil on the surface, even after 

 standing two or three days. This is the stock 

 solution. Make up to 33 gallons. Use only 

 rain-water, or soft water (i.e., water without 

 lime). 



Rosin Wash. Mix 20 Ib. of rosin, 3^- Ib. ot 

 98 per cent, caustic soda, and 3 pints of fish 

 oil. The rosin and caustic soda must be 

 pounded before mixing. Cover this with 

 about 2 inches of water, and boil. When the 

 liquid is clear, slowly add water, still boiling 

 the mixture, till the whole is made up to 

 15 gallons. This is the stock solution andean 

 be made up to TOO gallons when cold, using 

 aonly rain-water, or soft water. 



Rosin Compound. Mix 4 Ib. of powdered 

 rosin, 3 Ib. of powdered washing soda, and 

 T gallon of water. Boil, and when all is 

 dissolved, slowly make up to 5 gallons. Boil 

 the mixture till it becomes a clear brown 

 colour. This is the stock solution. Make 

 this up to 30 gallons. 



Rosin and Whale-oil Soap Compound. This 

 is composed as follows : Rosin 4 Ib. ; washing 

 soda 3 Ib. ; whale-oil soap 10 Ib. With the 



