ANTIFOULING COMPOSITIONS: See Paints.
ANTIFREEZING SOLUTION: See Freezing Preventives.
ANTIFRICTION METAL: See Alloys, under Phosphor Bronze and Antifriction Metals.
ANTIQUES, TO PRESERVE.
The best process for the preservation of antique metallic articles consists in a retransformation of the metallic oxides into metal by the electrolytic method. For this purpose a zinc strip is wound around the article and the latter is laid in a soda-lye solution of 5 per cent, or suspended as the negative pole of a small battery in a potassium cyanide solution of 2 per cent. Where this method does not seem practicable it is advisable to edulcorate the objects in running water, in which operation fragile or easily destroyed articles may be protected by winding with gauze; next, they should be carefully dried, first in the air, then with moderate heat, and finally protected from further destruction by immersion in melted paraffine. A dry place is required for storing the articles, since paraffine is not perfectly impermeable to water in the shape of steam.
ANTIRUST COMPOSITIONS: See Rust Preventives.
ANTISEPTICS
Antiseptic Powders.—
| I.— | Borax | 3 ounces |
|---|---|---|
| Dried alum | 3 ounces | |
| Thymol | 22 grains | |
| Eucalyptol | 20 drops | |
| Menthol | 1 1/2 grains | |
| Phenol | 15 grains | |
| Oil of gaultheria | 4 drops | |
| Carmine to give a pink tint. | ||
| II.— | Alum, powdered | 50 parts by weight |
| Borax, powdered | 50 parts by weight | |
| Carbolic acid, crystals | 5 parts by weight | |
| Oil of eucalyptus | 5 parts by weight | |
| Oil of wintergreen | 5 parts by weight | |
| Menthol | 5 parts by weight | |
| Thymol | 5 parts by weight | |
| III.— | Boracic acid | 10 ounces |
| Sodium biborate | 4 ounces | |
| Alum | 1 ounce | |
| Zinc sulphocarbolate | 1 ounce | |
| Thymic acid | 1 drachm. |
Mix thoroughly. For an antiseptic wash dissolve 1 or 2 drachms in a quart of warm water.