A large excess of ammonia tends to produce a brownish dye. Various shades of brown may be produced by increasing the amount of water in the silver solution. It should be remembered that the hair must, previously to treatment, be washed with warm water containing sodium carbonate, well rinsed with clear water, and dried.

I

Silver nitrate..... 480 grains

Copper nitrate ... 90 grains Distilled water. .. 8 fluidounces Ammonia water, sufficient. Dissolve the two salts in the distilled water and add the ammonia water until the liquid becomes a clear fluid.

In using apply to the hair carefully with a tooth-brush, after thoroughly cleansing the hair, and expose the latter to the rays of the sun.

II

Silver nitrate....... 30 parts

Copper sulphate, crystals......... 20 parts

Citric acid......... 20 parts

Distilled water..... 950 parts

Ammonia water, quantity sufficient to dissolve the precipitate first formed. Various shades of brown may be produced by properly diluting the solution before it be applied.

Bismuth subnitrate..........200 grains

Water........... 2 fluidounces

Nitric acid, sufficient to dissolve, or about.......420 grains

Use heat to effect solution. Also: Tartaric acid .... 150 grains Sodium bicarbonate .......... 168 grains

Water.......... 32 fluidounces

When effervescence of the latter has ceased, mix the cold liquids by pouring the latter into the former with constant stirring. Allow the precipitate to subside; transfer it to a filter or strainer, and wash with water until free from the sodium nitrate formed.

Chestnut Hair Dye

Bismuth nitrate. .. 230 grains

Tartaric acid...... 75 grains

Water............ 100 minims

Dissolve the acid in the water, and to the solution add the bismuth nitrate and stir until dissolved. Pour the resulting solution into 1 pint of water and collect the magma on a filter. Remove all traces of acid from the magma by repeated washings with water; then dissolve it in: Ammonia water. . 2 fluidrachms And add:

Glycerine....... 20 minims

Sodium hyposulphite......... 75 grains

Water, enough to make........ 4 fluidounces.