Nitrate of silver, 1 oz., blue bottles. 
Water, 6 oz. "
The mordant.—­Sulphuret of potassium, 1 oz., white bottles.
    " Water, 6 oz. "

The mordant is to be applied to the hair first; when dry, the silver solution.

Great care must be taken that the sulphuret is fresh made, or at least, well preserved in closed bottles, otherwise, instead of the mordant acting to make to make the hair black, it will tend to impart a yellow hue.  When the mordant is good, it has a very disagreeable odor, and although this is the quickest and best dye, its unpleasant smell has given rise to the

INODOROUS DYE.

Blue bottles.—­Dissolve the nitrate of silver in the water as in the above, then add liquid ammonia by degrees until the mixture becomes cloudy from the precipitate of the oxide of silver, continue to add ammonia in small portions until the fluid again becomes bright from the oxide of silver being redissolved.

White bottles.—­Pour half a pint of boiling rose-water upon three ounces of powdered gall-nuts; when cold, strain and bottle.  This forms the mordant, and is used in the same way as the first-named dye, like the sulphuret mordant.  It is not so good a dye as the previous one.

FRENCH BROWN DYE.

Blue Bottles.—­Saturated solution of sulphate of copper; to this add ammonia enough to precipitate the oxide of copper and redissolve it (as with the silver in the above), producing the azure liquid.

White Bottles.—­Mordant.—­Saturated solution of prussiate of potass.

Artificial hair, for the manufacture of perukes, is dyed in the same manner as wool.

There are in the market several other hair dyes, but all of them are but modifications of the above, possessing no marked advantage.

LEAD DYE.

Liquid hair dye, not to blacken the skin, may be thus prepared:—­Dissolve in one ounce of liquor potassae as much freshly-precipitated oxide of lead as it will take up, and dilute the resulting clear solution with three ounces of distilled water.  Care must be taken not to wet the skin unnecessarily with it.

QUICK DEPILATORY OR RUSMA. (For removing hair.)

As the ladies of this country consider the growth of hair upon the upper lip, upon the arms, and on the back of the neck, to be detrimental to beauty, those who are troubled with such physical indications of good health and vital stamina have long had recourse to rusma or depilatory for removing it.

This or analogous preparations were introduced into this country from the East, rusma having been in use in the harems of Asia for many ages.

Best lime slaked, 3 lb. 
Orpiment, in powder, 1/2 lbs.

Mix the material by means of a drum sieve; preserve the same for sale in well-corked or stoppered bottles.