We shall employ the terms essence, extract, and tincture in the sense here explained.

Extract of Cassie (Extrait de Cassie).

Cassie pomade6 lbs.
Alcohol5 qts.

Extract of cassie has a fine green color—a fact which is not desirable in perfumes intended for the handkerchief because colored preparations leave stains. However, extract of cassie is rarely used pure, but is generally mixed with other odors for handkerchief perfumes, whereby the color is so much diluted that it may be disregarded. This extract—and the same remark applies to all the others—immediately after its preparation must be put into tightly closed vessels and preserved in the coolest attainable dark place; for light, air, and heat must be called the destroyers of perfumes, since the most delightful odors eventually disappear under their influence.

For the benefit of manufacturers who import this extract from Southern France, the main source of supply, we may add that the word cassie or extrait de cassie, derived from the flowers of Acacia farnesiana, might readily give rise to confusion with extrait de cassia, made from the bark of the cinnamon cassia.

Tincture of Ambergris (Extrait d’Ambregris).

Ambergris5 oz.
Alcohol5 qts.

The ambergris should be broken into small pieces with a chopping knife repeatedly moistened with alcohol, and allowed to digest in the alcohol for some weeks at a temperature of about 30° C. (86° F.).

Tincture of Benzoin (Extrait de Benjoin).

Benzoin10 oz.
Alcohol5 qts.