I

Borax............     3 ounces

Dried alum.......     3 ounces

Thymol...........   22 grains

Eucalyptol........   20 drops

Menthol..........     1.5 grains

Phenol...........   15 grains

Oil of gaultheria...     4 drops Carmine to give a pink tint.

II

Alum, powdered........   50

Borax, powdered........   50

Carbolic acid, crystals ...     5

Oil of eucalyptus.......     5

Oil of wintergreen.......     5

Menthol...............     5

Thymol................     5

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.

IV

Ektogan is a new dusting powder which is a mixture of zinc hydroxide and dioxide. It is equivalent to about 8 per cent of active oxygen. It is a yellowish-white odorless and tasteless powder, insoluble in water. It is used externally in wounds and in skin diseases as a moist dressing mixed with citric, tartaric, or tannic acid, which causes the liberation of oxygen. With iodides it liberates iodine. It is stated to be strongly antiseptic; it is used in the form of a powder, a gauze, and a plaster.