738

ZINCUM.— ZINC.

portions, but reduces the wax to threeounces, and replaces the calcined lead bytwo ounces of subcarbonate.

COMPOUND OINTMENT OF CALAMINE.

Unguentum Calaminée compositum seu ex-siccans rubrum Acrelii. (Fenn.; Suec.)

Calamine,Semivitreous Oxide of

Lead,Subcarbonate of Lead,Red Oxide of Lead, 1Acetate of Lead, JGoat's Suet,Linseed Oil,

I of each,| half a pound.

of each,three ounces,one pound,eight ounces.

Melt the suet, add the oil, then the pow-ders, and when the mass is a little cooled,Powdered Camphor, three drams.

Mix.

AMMONIÜRET OF ZINC. (VAN Mons)

R. Solution of Acetate of Zinc,

any quantity.

------------- Ammonia,

a sufficient quantity.Add the latter to the former till it ceasesto effect a precipitate. Wash and dry thisin the smallest possible quantity of solutionof ammonia ; then filter, evaporate, andcrystallize.

SULPHATE OF ZINC.

Vitriolum album seu Goslariense seu Zinci,Sulphas Zinci seu zincicum, Zincum sul-phnricum, Gilla Vitrioli seu Theophrasti,Sal vomitorium Vitrioli, Chalcantumalbum. — White Vitriol, White Copperas.

1. That which is found in commerce.

Amer. ; Amst. ; Batav. ; Belg. ; Bruns. ;Dan. ; Mil. Copen. ; Hisp. ; Gall. ;Fenn.; Ferr. ; Form. Hop. Fr. ; Fuld.;Genev. ; Hamb.; Hass.;Lifp. ; Lusit. ;Cast. Borus. ; Ross.; Suec; Wirtem.;Herbip. ; Wurceb. ; Coxe ; Paris ; Pi-DERiT ; Saunders; Spielmann.

2. Purification of that of commerce.

R. White Vitriol, any quantity

Having calcined it, dissolve it in water,and crystallize several times successively.(Gall.)

Wirtem. omits the calcination. — Fuld. ;Lipp. ; and Herbip. direct one pound of thesalt to be dissolved in two pounds of boil-ing water, the solution to be left in diges-tion for six hours on six drams of shot-zinc, then to be evaporated and crystallized.

3. Prepared expressly.

Lond. ; Edinb. ; Duel. ; Ant. ; Austr. ;

Batav.; Bavar. ; Belg. ; Hiap. ;Gall.; Ferr.; Fenn.; Hann. ; Olden. ;Pol. ; Borus. ; Sax. ; Suec. ; Bhugna-telli; Coxe; Swediaur; Van Mons.

Zinci Sulphas.

R. Zinc, broken into small pieces,four ounces.Sulphuric Acid, by weight,

six ounces.Water, four pints.

Mix in a glass vessel, and whenthe effervescence has ceased, filter thesolution through paper ; then boil tilla pellicle appears on the surface, andset it aside to crystallize, (Lond.)R. Zinc, in small pieces, three parls.Sulphuric Acid, five parts.

Water, twenty parts.

Mix, and when the effervescencehas ceased, digest for a short time ina sand-bath. Filter the decanted so-lution through paper; then evaporate,and set aside to crystallize. (Edinb.)

R. Zinc, in small pieces,

thirteen parts.Sulphuric Acid, twenty parts.Water,one hundred and twenty parts.Pour the acid mixed with the waterupon the zinc in a glass vessel. Di-gest for a short time after the effer-vescence has ceased ; then evaporatethe strained solution to the requireddegree, and set it apart to crystal-lize. (Dubl.)R. Sulphuric Acid (20 degrees),

any quantity.Put it into a glass capsule placed in asand-bath, and when it is moderately heated,add shot-zinc gradually to it, dilute the li-quor with a little water, saturate, evaporate,and crystallize.

This salt is employed externally as astrin-gent, and internally as tonic and astringent,in the dose of from one to five grains twiceor thrice a day, and as emetic, in that offrom ten to twenty grains in distilled water.

EXPECTORANT PILLS. (ElLIS ; PARIS)

R. Sulphate of Zinc, half a scruple.

Conserve of Roses, a sufficient quantity.

Make twenty pills. — Dose, one, three or

four times a day, in hooping cough and

phthisis pulmonalis. (Ellis)