FERRUM— IRON.

651

It is tonic, excitant, and resolvent ; andhas been recommended in most diseases at-tributed to asthenia. — Dose, from half apound to six pounds, alone, or diluted withone third of pure water.

SALINE FERRUGINOUS WATER.

Aqua mincralis ferrata. (Niemann ;Swediaur)

R. Pure Water, fifty pounds.

Sub-carbonate of Lime, five drams.

------------------------ Magnesia, ten drams.

Black Oxide of Iron, two drams.

Sulphate of Magnesia, six drams.

Muriate of Soda, one dram.

Condense one thousand cubic inches ofcarbonic acid gas into the solution, andpreserve it for use.

This may be substituted for the naturalsaline ferruginous mineral waters.

TRITO-PHOSPHATE OF IRON.

Phosphas Ferri ; Ferrum phosphoricum ;Bleu dePrusse natif. (Amer. ; Suec. ; Au-gustin; Coxe; Niemann; Van Mons)

R. Pure Iron, any quantity.

Hydrochloric Acid,

a sufficient quantity

to dissolve it. Add to the solution

Phosphate of Soda, a sufficient quantity;or, till no more precipitate is formed. Washthis, and dry it. (Amer. ; Coxe ; Nie-mann)R. Sulphuric Acid, three ounces two drams.

Nitric Acid, seven ounces.

Distilled Water, twenty ounces.

Sulphate of Iron, seventy ounces.

Heat the water and acids in a large earthenvessel, till the mixture hoi's, and then throwinto it, by small portions, the sulphate re-duced to powder. When the solution iscold, add to it

Distilled Water, ten pounds ;

then pour into the liquor solution of phos-phate of soda till no more precipitate isformed. Wash and dry this. (Suec.)

Van Mons prescribes three parts and afourth of sulphuric acid, seven of nitricacid, seventy of sulphate, and twenty ofwater.

R. Phosphoric Acid, any quantity.

Rust of Iron, a sufficient quantity

to saturate the acid. Preserve the solution.(Augustin)

Kapp wrote an essay upon this salt atErlangen, in 1801, from which time it hasbeen occasionally attempted to be introducedinto practice ; but never having becomefashionable, it is now quite disregarded,and perhaps deservedly.

Dose, from ten to fifteen grains. Scho-belt says that in the liquid state it is veryuseful in caries of the teeth.

proto-sulphate of iron.

Ferrum sulphuricum seu vitriolatum seusulphuricum oxydulatum, Mars vitriolatus,Sal Chalijbis, Sulphas Ferri seu OxyduliFerri, Sal Martis, Vitriolum viride seuMartis seu Ferri seu ferreum seu Roma-nian seu Hungaricum seu Anglicum seuLondinense viride cubicum, Sulphas Pro-tox-idi Ferri. — Sulphate of Iron, GreenVitriol.

1. That which is met with in Commerce.

Amer. ; Amst. ; Batav. ; Belg. ; Bruns. ;

Dan. ; Hisp. ; Gall. ; Fenn. ; Ferr. ;

Form. Hop. Fr. ; Fuld. ; Genev. ;

Hamb. ; Hass. ; Lipp.; Lusit. ; Cast.

Borus. ; Ross. ; Suec ; Wirtem. ;

Herbip. ; Wurceb. ; Coxe ; Paris ;

Piderit ; Spielmann.

In green rhomboidal prisms, efflorescent,of a styptic taste, more soluble in warm thanin cold water, and susceptible of aqueousfusion.

As it contains the sulphates of aluminaand of copper, it is necessary to purify it,which may be done by boiling a solution ofit with perfectly pure iron filings, thenstraining, and crystallizing again ; the crvs-tals allowed to drip, and then finally, to bedried. (Gall. ; Van Mons)

2. Prepared according to various Formula:.

Lond.; Dubl. ; Edinb. ; Amst.; Ant.Austr. ; Batav.; Bavar. ; Belg.Bruns.; Dan.; Hisp.; Gall.; Fenn.Fuld. ; Hann. ; Hass. ; Lipp. ; Olden.Lusit. ; Palat. ; Pol. ; Borus. ; Sax.Sard. ; Suec ; Wirtem. ; Herbip.Brugnatelli ; Coxe ; Piderit ; Spiel-mann ; Swediaur; Van Mons.

Ferri Sulphas.

R. Iron, 1 of each,

Sulphuric Acid, j eight ounces.

Water, four pints.

Mix the acid slowly with the water

in a glass vessel, and add the iron to

the mixture : when the effervescence

has ceased, filter the solution through

paper, and evaporate it over a fire,

that crystals may form as it cools;

then pour off the water, aud dry the

crystals on bibulous paper. (Lond.)

Dubl. prescribes four parts of iron

wire, seven parts of sulphuric acid,

and sixty parts of water.

H