474 Hygiene and Medicines. 



It has been found by experience that no one substance acts 



so effectually by itself as it does in combination or solution. 



The following are in the solid form of powders : — 



No. 465. Copperas (sulphate of iron), 300 parts. 



Plaster-of-Paris, ground, 100 parts. 



Carbolic acid, 2 parts. 



Mix well together. 



No. 466. Copperas, 20 parts. 



White vitriol, 1 part. 



Plaster-of-Paris, 36 parts. 



Mix. 



No. 467. Copperas, 6 lbs. 



Common salt, 4 lbs. 



Flowers of sulphur, 2 lbs. 



Mix. This costs about 14 cents per pound. It has been sold as the 

 Excelsior disinfectant. 



No. 468. Air-slacked lime, 1 bushel. 



Copperas, 1 lb. 



Carbolic acid, i Ih. 



Mix. This has been sold as " carbolate of lime." It costs about 50 

 cents a bushel. 



The following are in the liquid form : — 



No. 469. Chloride of aluminum, IJ lbs. 



Water, 1 gallon. 



Dissolve. This is known as " chloralum," and was introduced by- 

 Prof. Gamgee. It is not poisonous, and has no smell. The cost is 

 about 50 cents. 



No. 470. White vitriol (zinc sulphate) 1 oz. 



Carbolic acid, i oz. 



Water. 1 gallon. 

 Mix. A cheap and efficient disinfecting wash. 



No. 471. Sulphate of iron, 16 oz. 



Chloride of zinc, 8 oz. 



Water, 1 gallon; 



Dissolve. This is a powerful disinfectant. Cost about $1.00 per 

 gallon. A pint of it, mixed with a gallon of water, is abundantly 

 strong enough. It is poisonous. 



