EAU DE LUCE.

Tincture of benzoin:  or, }
   " balsam of Peru, } 1 oz. 
Otto of lavender, 10 drops. 
Oil of amber, 5 "
Liquor ammonia, 2 oz.

If requisite, strain through cotton wool, but it must not be filtered, as it should have the appearance of a milk-white emulsion.

ACETIC ACID AND ITS USE IN PERFUMERY.—­The pungency of the odor of vinegar naturally brought it into the earliest use in the art of perfumery.

The acetic acid, evolved by distilling acetate of copper (verdigris), is the true “aromatic” vinegar of the old alchemists.

The modern aromatic vinegar is the concentrated acetic acid aromatized with various ottos, camphor, &c., thus—­

AROMATIC VINEGAR.

Concentrated acetic acid, 8 oz. 
Otto of English lavender, 2 drachms. " " rosemary, 1 drachm. " cloves, 1 " " camphor, 1 oz.

First dissolve the bruised camphor in the acetic acid, then add the perfumes; after remaining together for a few days, with occasional agitation, it is to be strained, and is then ready for use.

Several forms for the preparation of this substance have been published, almost all of which, however, appear to complicate and mystify a process that is all simplicity.

The most popular article of this kind is—­

HENRY’S VINEGAR.

Dried leaves of rosemary, rue, wormwood, sage, mint, and lavender flowers, each, 1/2 oz. 
Bruised nutmeg, cloves, angelica root, and camphor, each, 1/4 oz. 
Alcohol (rectified), 4 oz. 
Concentrated acetic acid, 16 oz.

Macerate the materials for a day in the spirit; then add the acid, and digest for a week longer, at a temperature of about 14 deg.  C. or 15 deg.  C. Finally, press out the new aromatized acid, and filter it.

As this mixture must not go into the ordinary metallic tincture press, for the obvious reason of the chemical action that would ensue, it is best to drain as much of the liquor away as we can, by means of a common funnel, and then to save the residue from the interstices of the herbs, by tying them up in a linen cloth, and subjecting them to pressure by means of an ordinary lemon-squeezer, or similar device.

VINAIGRE A LA ROSE.

Concentrated acetic acid, 1 oz. 
Otto of roses, 1/2 drachm.

Well shaken together.