Dose. - 5-20 grains (0.3-1.2 Gm.) [4 grains (0.25 Gm.), U. S. P.].

Ferri Phosphas Solubilis - Ferri Phosphatis Solubilis - Soluble Ferric Phosphate (U. S. P.). - Description and Properties. - Thin, bright-green, transparent scales, odorless, and having an acidulous, slightly saline taste. The salt is permanent in dry air when excluded from light, becoming dark and discolored when exposed to it. Freely and completely soluble in water, but insoluble in alcohol. It should be kept in dark amber-colored, well-stoppered bottles (12 per cent. metallic iron).

Dose. - 5-10 grains (0.3-0.6 Gm.) [4 grains (0.25 Gm.), U. S. P.].

Ferri Pyrophosphas Solubilis - Ferri Pyrophosphatis Solubilis - Soluble Ferric Pyrophosphate (U.S. P.). - Description and Properties. - Thin, apple-green, transparent scales, without odor, and having an acidulous, slightly saline taste; permanent in dry air if protected from light, and if exposed to it becoming dark and discolored. Freely and completely soluble in water, but insoluble in alcohol. It should be kept in dark amber-colored, well-stoppered bottles (10 per cent. metallic iron).

Dose. - 2-5 grains (0.1-0.3 Gm.) [4 grains (0.25 Gm.), U. S. P.].

Ferri Hypophosphis - Ferri Hypophosphitis - Ferric Hypophpsphite (U. S. P.). - Origin. - The precipitate formed by mixing solutions of sodium hypophosphites and ferric chloride or ferric sulphate.

Description and Properties. - A white or grayish-white powder, odorless and nearly tasteless, permanent in the air. Only slightly soluble in water. It should be kept in well-stoppered bottles.

Dose. - 5-10 grains (0.3-0.6 Gm.) [3 grains (0.2 Gm.), U. S. P.].

Ferri Sulphas - Ferri Sulphatis - Ferrous Sulphate (U. S. P.). - Origin. -Obtained by the action of sulphuric acid and water upon iron wire.

Description and Properties. - Large, pale bluish-green, monoclinic prisms, without odor, and having a saline, styptic taste; efflorescent in dry air; on exposure to moist air the crystals rapidly absorb oxygen, becoming coated with a brownish-yellow, basic ferric sulphate. Soluble in 1.8 parts of water and in 0.3 part of boiling water; insoluble in alcohol.

Dose. - 1-3 grains (0.06-0.18 Gm.) [3 grains (0.18 Gm.), U. S. P.].

Ferri Sulphas Exsiccatus - Ferri Sulphatis Exsiccati - Dried Ferrous Sulphate (U. S. P.). - Description and Properties. - A grayish-white powder, slowly but completely soluble in water.

Dose. - 1/2-2 grains (0.03-0.12 Gm.) [2 grains (0.12 Gm.), U. S. P.].

F6rri Sulphas Granulatus - Ferri Sulphatis Granulati - Granulated Ferrous Sulphate (U. S. P.). - Description and Properties. - A pale bluish-green, crystallized powder, which should conform in every respect to the reactions and tests given under Ferri Sulphas in the U. S. P.

Dose. - 1/2-3 grains (0.03-0.18 Gm.) [3 grains (0.18 Gm.), U. S. P.].

Liquor Ferri Subsulphatis - Liquoris Ferri Subsulphatis - Solution of Ferric Subsulphate (U. S. P.) (Solution of Basic Ferric Sulphate - Monsel's Solution). - Origin. - An aqueous solution of basic ferric sulphate - of varying chemical composition - corresponding to about 13.6 per cent. of metallic iron.

Description and Properties. - A dark, reddish-brown liquid, odorless or nearly so, of an acid, strongly styptic taste, and an acid reaction. Miscible with water and alcohol in all proportions, without decomposition.

Dose. - 1-10 minims (0.06-0.6 Cc.) [3 minims (0.2 Cc), U. S. P.], largely diluted - chiefly used, however, as a local styptic.

Liquor Ferri Tersulphatis - Liquoris Ferri Tersulphatis - Solution of Ferric Sulphate (U. S. P.). - Origin. - An aqueous solution of normal ferric sulphate, containing about 36 per cent. of normal ferric sulphate, and corresponding to not less than 10 per cent. of metallic iron.

Description and Properties. - A dark, reddish-brown liquid, almost odorless, having an acid, strongly styptic taste, and an acid reaction. Miscible with water and alcohol in all proportions, without decomposition.

Dose. - 1-10 minims (0.06-0.6 Cc), given in the same manner and for the same purposes as the preceding preparation.

Pilulae Aloes et Ferri - Pilulas (acc.) Aloes et Ferri - Pills of Aloes and Iron (U. S. P.). - Described under Aloes.

Dose. - 5-10 grains (0.3-0.6 Gm.), or two or three pills.

Pilulae Ferri Carbonatis - Pilulas (ace.) Ferri Carbonatis - Pills of Ferrous Carbonate (U. S. P.) (Ferruginous Pills - Chalybeate Pills - Blaud's Pills). - Dose. - 2-5 pills, each pill containing 1 grain (0.064 Gm.) of ferrous carbonate.

Allied Compounds

Haemogallol. - Origin. - Prepared by the action of pyrogallol on the coloring-matter of the blood.

Description and Properties. - A reddish-brown, tasteless powder.

Dose. - 1-8 grains (0.06-0.5 Gm.).

Haemol.- Origin. - Prepared by the action of zinc dust on the coloring-matter of the blood.

Description and Properties. - A blackish-brown powder having a slight taste.

Dose. - 1-8 grains (0.06-0.5 Gm.).

Ferratin. - Origin. - A compound of iron first obtained by Professor Schmiedeberg from hog's liver.

Description and Properties. - A fine, reddish-brown powder, containing about 7 per cent. of iron. One variety is insoluble, though the sodium ferratin is freely soluble in water.

Dose. - 10-20 grains (0. 16-1.2 Gm.).

Haemalbumin. - A preparation said to contain two albuminoids and salts of the blood.

Description and Properties. - A permanent powder, soluble in water and in alcohol.

Dose. - 5-15 grains (0.3-1.0 Gm.).

Haemoglobin. - Said to be the coloring-principle of the solid elements of the blood.

Dose. - 1-3 grains (0.06-0.18 Gm.).

Haemoferrum. - Claimed to be a natural proteid compound of iron obtained from bullock's blood.

Dose. - 1-3 grains (0.06-0.18 Gm.).

Iron Quinine Chloride. - A yellowish-red powder, soluble in water, alcohol, and glycerin.