FERRUM.— IRON.

647

Moisten them with water till theyfall into rust. Reduce this to powder.

Ferri Rubigo. (Dlbl.)R. Iron Wire, any quantity.

Expose it, cut into small pieces, tothe air, frequently moistening it withwater till it becomes converted intorust. Triturate this in an iron mortar,adding water to wash over the finestparticles of the powder, which are tobe dried.

Amer. ; Hisp. ; Ferr. ; Fenn. ; Form.Hop. Fr. ; Genev. ; Lusit. ; Suec. ;Coxe ; and Henri give the same formulaas Edinb.

Amst. directs the filings to be sprinkledwith vinegar. — Sard.— with dew collectedin the month of May, to make with theiron a mass to be dried in the shade ; it isto be continually treated in the same man-ner till converted into rust.

This salt is astringent and tonic. It hasbeen extolled in neuralgia.

Dose, from five to fifteen grains.

ferruginous water. (Cadet de Gassi-court ; Pierhuin)

R. Rusty Nails, one handful.

Boiling Water, one pound.

Pour off the water, at the end of twelvehours.

It is reputed tonic and emmenagogue. —It is recommended in chlorosis, leucor-rhoea, dyspepsia, and dropsical affections.

ALKALINE SOLUTION OF IRON.

Liquor Ferri alkalini, Teinture martiale al-caliac de Stahl. (Lond. ; Amer. ;Coxe)

R. Iron, two drams and a half.

Nitric Acid, two fluid ounces.

Distilled Water, six fluid ounces.When the effervescence has ceased,pour off the acid solution, and addvery gradually,

Solution of Subcarbonate ofPotass, six fluid ounces,

shaking the vessel frequently till theliquor assumes a brownish red co-lour, and no more effervescence isexcited; then set it aside for sixhours, and pour off the liquor.

This liquor, about which chemists, andparticularly the English chemists, much

employ themselves, is a mixture of nitrateof potass, and of a solution of subcarbonateof Iron in solution of subcarbonate of po-tass, and perhaps of subcarbonate of potassand of iron.

It is tonic and excitant. — Dose, from halfa dram to one dram and a half. It is de-composed by water and by alcohol.

It bears some resemblance to the Tinc-tura elástica, Carbonos Potassœ et Ferriliquidus (Hisf.) ; of which the following isthe formula :

R.. Iron Filings, two ounces.

Subcarbonate of Potass, eight ounces.

Fuse them together in a crucible, with aviolent heat ; then reduce the mass to pow-der in an iron mortar, and leave it exposedto the air till it becomes deliquesced.

Griffith's tonic mixture.

Mixtura seu Emulsio Ferri composita seuMyrrhœ Grißthii. (Lond. ; Amer. ;Suec ; Augustin ; Cadet de Gassi-court ; Coxe ; Ellis ; Niemann ;Swediaur ; Van Mons)

Mistura Ferri composita. (Lond. ;Dlbl.)

R. Myrrh, one dram.

Subcarbonate of Potass,

twenty-five grains.Rose Water,

• seven fluid ounces and a half.Sulphate of Iron, one scruple.Spirit of Nutmeg,

half a fluid ounce.Refined Sugar, one dram.

Triturate the myrrh, in ponder,the subcarbonate and the sugar to-gether, adding the water and spirit ;and then add the sulphate. Put themixture immediately into a properglass vessel, and keep it well «topped.Amer. ; Coxe ; and Van Mons give thesame formula.

R. Myrrh, one dram.Peppermint Water,

six ounces and a half.

Triturate well, and add to the strainedmixture,

Subcarbonate of Potass,

twenty-five grains,

Sulphate of Iron, one scruple.

Tincture of Lavender, six drams.

Simple Syrup, two drams.

Mix. (Suec)

R. Myrrh, two drams.

Subcarbonate of Potass, one dram.