Annealed iron wire or wrought iron nails.

Incompatibles of ferric salts, in general, alkali hydrates and carbonates, (precipitate ferric hydrate, in part prevented by sugar, glycerin, citrates, and tartrates); carbonates of the alkaline earths, borax, alkali phosphates and sulphides; alkali hypophosphites in a neutral solution; iodides in an acid solution; arsenites, tannic acid, benzoates; a change in colour is given with tannic and gallic acids, acetates, salicylates, phenol, acetanilid, anti-pyrine, phenacetin, many oils, oleoresins, and balsams, morphine. (These colour reactions in some cases occur with the chloride only, and are in all cases more marked with it.) Acacia is gelatinised and albumin precipitated

Incompatibles of ferrous salts, readily oxidised by air, alkali hydrates and carbonates, phosphates, borax, tannic and gallic acids, oxidising reagents.

3Ferri Arsenas. Dose, 1/16 - 1/4 grs.; 4 - 16 mgms. Ferrous Arsenate, Fe3(As04)2, 6H20. mixed with some ferric arsenate and oxide. An amorphous, tasteless, greenish powder. Insoluble in water, readily in hydrochloric acid.

3Ferric Carbonas Saccharatus. Dose, 10 - 30 grs.; 1/2 - 2 gms. Ferrous Oxycarbonate, xFeCo3, yFe (OH)2, more or less oxidised and mixed with sugar. Brownish-grey lumps or powder, with a sweetish chalybeate taste, of which Iron Carbonate forms about 1/3. Only partly soluble in water, soluble in hydrochloric acid.

3Ferri Phosphas. Dose, 5 - 10 grs. 3 - 6 dgms. Ferrous phosphate Fe3(PO4)2, 8H20, (47%) mixed with ferric phosphate and oxide. A slate-blue amorphous powder. Insoluble in water, soluble in hydrochloric acid.

1Ferri Sulphas. Dose, 1 - 5 grs.; 1/2 - 3 dgms. Ferrous sulphate, FeS04, 7H20. Pale blue-green crystals with an astringent taste. Soluble 1 in 1 1/2 of water, insoluble in alcohol.

1Mistura Ferri Composita. (Griffith's Mixture.) Dose, 1/2 - 1 fl. oz. 15 - 30 c.c.

- 0.57; Potassium Carbonate, 0.686; Myrrh, 1.37; Sugar, 1.37; Spirit of Nutmeg, 1.04; Rose Water, to 100. A dark-green mixture containing a precipitate of ferrous carbonate.

1Ferri Sulphas Exsiccatus. Dose, 1/2 - 3 grs.; 1/4 - 2 dgms. Ferrous sulphate from which six molecules of water have been removed by heat. A white powder slowly soluble in a little more than 2 parts of water.

1Pilula Ferri. (Blaud's Pill.) Dose, 5 - 15 grs.; 3 - 10 dgms. (In 1 - 3 pills).

- 30; Exsiccated Sodium Carbonate, 19; Gum Acacia, 10; Tragacanth, 3; Syrup, 30; Glycerin, 2; Water q.s. Each pill contains about 1 gr. of Ferrous Carbonate.

2Ferrum Redactum. Reduced Iron. Dose, 1 - 5 grs.; 1/2 - 3 dgms. A fine greyish-powder, strongly attracted by the magnet, producing black streaks if rubbed in the mortar. Contains at least 75% of iron, the rest being oxide. Incompatibles, salts of lead, silver, copper, bismuth, mercury and antimony: may explode if rubbed with potassium permanganate and chlorate.

3Trochiscus Ferri Redacti. 1 gr. with the Simple Basis.

iFerrum Tartaratum. Dose, 5 - 10 grs.; 3 - 6 dgms. Garnet scales sweetish and astringent. Slowly soluble 1 in 1 of water, sparingly in alcohol.

1Ferri et Ammonii Citras. Dose, 5 - 10 grs.; 3 - 6 dgms. A mixture of ferric citrate and ammonium citrate. Deep red, trans parent scales, slightly sweetish and astringent in taste. Soluble 2 in 1 of water, giving a slightly acid solution; almost insoluble in alcohol.

2Vinum Ferri Citratis. Dose, 1 - 4 fl. dr.; 4 - 16 c.c. - 1.83; Orange Wine, 100. 8 grs. in 1 fl. oz.

1Ferri et Quininę Citras. Dose, 5 - 10 grs.; 3 - 6 dgrs. Contains ferric and quinine citrate. Greenish-golden scales, somewhat deliquescent, bitter and chalybeate in taste. Soluble, 1 in 2 of water, the solution being very slightly acid. Contains 1 of quinine in 6.66.

2Liquor Ferri Acetatis. Dose, 5 - 15 min.; 0.3 - 1 c.c. A solution containing ferric acetate. Deep red, with a sour, astringent taste, and an acetous odour. Miscible with water and alcohol in all proportions.

2Liquor Ferri Perchloridi Fortis. Made by dissolving Iron Wire in acids. An orange-brown liquid with a strong astringent taste, acid in reaction. Miscible with water and alcohol in all proportions. 22.5 grs. of Ferric Chloride in 110 min.

1Liquor Ferri Perchloridi. Dose, 5 - 15 min.; 0.3 - 1 c.c. - 25; Water, 75. 5.5 grs. Ferric Chloride in 110 min.

1Tinctura Ferri Perchloridi. Dose, 5 - 15 min.; 0.3 - 1 c.c. - 25; Alcohol, 25; Water, 50.

3Liquor Ferri Pernitratis. Dose, 5 - 15 min.; 0.3 - 1 c.c. An acid solution containing ferric nitrate. Reddish-brown, acid and astringent in taste. Contains 3.3 grs. Ferric Nitrate in 110 min.

3Liquor Ferri Persulphatis. A solution of ferric sulphate. Dark red in colour.

JSyrupus Ferri Phosphatis. Dose, 30 - 60 min.; 2-4 c.c. Contains 1 gr. of anhydrous ferrous phosphate in 1 fl. dr. Acid in reaction.

1Syrupus Ferri Phosphatis cum Quinina et Strychnina. Dose, 30 - 60 min.; 2 - 4 c.c.

Acid in reaction. 1 fl. dr. contains 1 gr. of anhydrous ferrous phosphate, 4/5 gr. of quinine sulphate, and 1/32 gr. of strychnine.

1Syrupus Ferri Iodidi. Dose, 30 - 60 min.; 2 - 4 c.c. Contains 1 gr. of ferrous iodide in 11 min.

2Vinum Ferri. Dose, 1- 4 fl. dr.; 4 -16 c.c. Iron Wire digested in Sherry for 30 days.

Vinum Ferri Citratis (see Ferri et Ammonii Citratis).