SELECTED FORMULÆ.

Essence of Pepsin.—

1.Pepsin (pure)128grains.
Dilute muriatic acid5drops.
Simple elixir3fl. ounces.
Glycerin1"
Water16"
Angelica wine6"
Dissolve by agitation and filter through purified talcum.
2.Glycerole of pepsin3parts.
Sherry wine5"
Glycerin1"
Simple elixir, to make16"
3.Pepsin in scales64grains.
Glycerin1fl. ounce.
Elixir taraxacum compound1"
Alcohol2"
Oil of cloves1drop.
Sirup2fl. ounces.
Dilute hydrochloric acid1fl. drachm.
Water, to make16fl. ounces.

—Pharmaceutical Era.

Applications to Insect Bites.—Brocq and Jacquet (Indépendance médicale, October 20) recommend the following for the bites of bugs, fleas and gnats:

1.Camphorated oil of chamomile100parts.
Liquid storax20"
Essence of peppermint5"
M.
2.Olive oil20parts.
Storax ointment25"
Balsam of Peru5"
M.
3.Naphthol5 to 10 parts.
Ether, enough to dissolve it.
Menthol¼ to 1 part.
Vaseline100 parts.

Bead for Liquors.—In the liquor trade, anything added to liquors to cause them to carry a "bead" and to hang in pearly drops about the side of the glass or bottle when poured out or shaken is called "beading," the popular notion being that liquor is strong in alcohol in proportion as it "beads." The object of adding a so-called "bead oil" is to impart this quality to a low-proof liquor, so that it may appear to the eye to be of the proper strength. The following formulas for "bead oil" are given:

1.Sweet almond oil1fl. ounce.
Sulphuric acid, concentrated1"
Sugar, lump, crushed1ounce.
Alcohol, sufficient.

Triturate the oil and acid very carefully together in a glass, Wedgwood or porcelain mortar or other suitable vessel; add by degrees the sugar, continue trituration until the mixture becomes pasty, and then gradually add enough alcohol to render the whole perfectly fluid. Transfer to a quart bottle and wash out the mortar twice or oftener with strong alcohol until about 20 fluid ounces in all of the latter has been used, the washings to be added to the mixture in the bottle. Cautiously agitate the bottle, loosely corked, until admixture appears complete, and set aside in a cool place. This quantity of "oil" is supposed to be sufficient for 100 gallons of liquor, but is more commonly used for about 80 or 85 gallons. The liquor treated with this "oil" is usually allowed to become clearer by simple repose.