| Powdered alum | 6 ounces |
| Powdered green copperas | 5 pounds |
| Powdered red lead | 5 pounds |
| Calvert’s No. 5 carbolic acid | 12 1/2 pounds |
| Spirit of turpentine | 1 1/2 pounds |
| Calais sand | 10 pounds |
| Slaked lime | 60 pounds |
Mix carbolic acid with turpentine and sand, then add the other ingredients, lastly the slaked lime and, after mixing, pass through a sieve. It is advisable to use lime that has been slaked some time.
Cuspidor Powder.
Deodorants For Water-closets.—
| I.— | Ferric chloride | 4 parts |
|---|---|---|
| Zinc chloride | 5 parts | |
| Aluminum chloride | 5 parts | |
| Calcium chloride | 4 parts | |
| Magnesium chloride | 3 parts | |
| Water sufficient to make | 90 parts |
Dissolve, and add to each gallon 10 grains thymol and 1/4 ounce oil of rosemary, previously dissolved in about 6 quarts of alcohol, and filter.
| II.— | Sulphuric acid, fuming | 90 parts |
|---|---|---|
| Potassium permanganate | 45 parts | |
| Water | 4,200 parts |
Dissolve the permanganate in the water, and add under the acid. This is said to be a most powerful disinfectant, deodorizer, and germicide. It should not be used where there are metal trimmings.
Formaldehyde For Disinfecting Books, Papers, Etc.
There is much difference of opinion as to the disinfecting and deodorizing power of formaldehyde when used to disinfect wooden tierces. While some have found it to answer well, others have got variable results, or failed of success. The explanation seems to be that those who have obtained poor results have not allowed time for the disinfectant to penetrate the pores of the wood, the method of application being wrong. The solution is thrown into the tierce, which is then steamed out at once, whereby the aldehyde is volatilized before it has had time to do its work. If the formal and the steam, instead of being used in succession, were used together, the steam would carry the disinfectant into the pores of the wood. But a still better plan is to give the aldehyde more time. {264}