| I.— | Creosote (containing 15 per cent to 20 per cent of carbolic acid) | 2 parts |
|---|
| Stearine or Yorkshire grease specific gravity, 1340 | 1 part |
| Black rosin, 5 per cent to 10 per cent. |
Melt the rosin and add grease and soda lyes, and then add creosote cold.
| II.— | Creosote | 1 part |
|---|
| Crude hard rosin oil | 1 part |
Put rosin oil in copper and heat to about 220° F., and add as much caustic soda powder, 98 per cent strength, as the oil will take up. The quantity depends upon the amount of acetic acid in the oil. If too much soda is added it will remain at the bottom. When the rosin oil has taken up the soda add creosote, and let it stand.
Odorless Disinfectants.—
| I.— | Ferric chloride | 4 parts |
|---|
| Zinc chloride | 5 parts |
| Aluminum chloride | 5 parts |
| Calcium chloride | 4 parts |
| Manganese chloride | 3 parts |
| Water | 69 parts |
If desired, 10 grains thymol and 2 fluidrachms oil of rosemary, previously dissolved in about 12 fluidrachms of alcohol, may be added to each gallon.
| II.— | Alum | 10 parts |
|---|
| Sodium carbonate | 10 parts |
| Ammonium chloride | 2 parts |
| Sodium chloride | 2 parts |
| Zinc chloride | 1 part |
| Hydrochloric acid, sufficient. |
| Water | 100 parts |
Dissolve the alum in about 50 parts boiling water and add the sodium carbonate. The resulting precipitate of aluminum hydrate dissolve with the aid of just sufficient hydrochloric acid, and add the other ingredients previously dissolved in the remainder of the water.
| III.— | Mercuric chloride | 1 part |
|---|
| Cupric sulphate | 10 parts |
| Zinc sulphate | 50 parts |
| Sodium chloride | 65 parts |
| Water to make | 1,000 parts. |