Brown powd.; 12.35% mercury, 28.68% iodine, with hemol.--Antisyphilitic (chiefly); without untoward action.--~Dose:~ 2--5 grn., 3 t. daily, in pills.

Mercury--U.S.P.

_Preparations:_ Ma.s.s (33 per cent.): Mercury with Chalk (D., 3--10 grn.); Oint. (50 per cent.); Plaster (18 per cent.); Ammoniac and Mercury Plaster (30 per cent. Hg.).

~Mercury, Ammoniated,~--see MERCURY-AMMONIUM CHLORIDE.

~Mercury Benzoate, Mercuric, Merck.~

White cryst.--SOL. in alcohol, solut. sodium chloride; slightly in water.--USES: Syphilis and skin diseases.--~Dose:~ 1/32--1/8 grn., in pills or hypodermically.

~Mercury Bichloride Merck (_Corrosive Mercuric Chloride, U.S.P._).--Recryst.~

~Dose:~ 1/32--1/12 grn.--MAX. D.: 1/8 grn. single; 1/2 grn.

daily.--ANTIDOTES: Zinc sulphate, emetics, stomach siphon, white of egg, milk in abundance, chalk mixture, castor oil, table salt, reduced iron, iron filings. White of egg and milk 2 or 3 t. daily for a week.--INCOMPATIBLES: Reduced iron, sulphurous acid, alb.u.min, alkalies, carbonates.

~Mercury Chloride, Mild, Merck.--U.S.P.~

CALOMEL.--INCOMPATIBLES: Sulphurous acid, hydrocyanic acid; alkali chlorides, bromides, iodides, sulphites, carbonates, hydrates; organic acids, lime water, etc.

~Mercury Cyanide Merck.~

~Dose:~ 1/16--1/8 grn., in solut.--EXTERN. (gargle) 1:10000.

~Mercury Imido-succinate,~--see MERCURY SUCCINIMIDE.

~Mercury Iodide, Red, Merck.~

MERCURY BINIODIDE.--~Dose:~ 1/16--1/4 grn., in pills.

~Mercury Iodide, Yellow, Merck--U.S.P.~

MERCURY PROTO-IODIDE.--~Dose:~ 1/2--2 grn. CAUTION: Never prescribe this with a soluble iodide, since mercury biniodide (highly poisonous) is formed!

~Mercury Oxide, Black (Hahnemann), Merck.~

HAHNEMANN'S SOLUBLE MERCURY.--Grayish-black powd.; decomposes on exposure to light.--~Dose:~ 1/4--3 grn.

~Mercury Oxide, Red, Merck.--U.S.P.--Levigated.~

Not used internally.--_Preparation:_ Oint. (10%).--INCOMPATIBLES: Chlorides.

~Mercury Oxide, Yellow, Merck.~

Not used internally.--_Preparation:_ Oint. (10%).

~Mercury Oxycyanide Merck.~

White, cryst. powd.--SOL. in water.--Antiseptic.--USES: _Extern._, diphtheria, erysipelas, and skin diseases; said superior as antiseptic dressing to mercuric chloride because more active as germicide and less easily absorbed.--APPLIED in 0.6% solut. to wounds and in surgical operations.

~Mercury Salicylate Merck.~

White powd.; about 59% mercury.--SOL. in solut. of sodium chloride, dilute alkalies.--USES: _Extern._, chancre, gonorrhea, and venereal affections; 1% powd. or oint.; _injection_ in urethra, 1--5% water.--Reported easily borne by the stomach, and to produce no salivation.--~Dose:~ 1/3--1 grn.

~Mercury Succinimide Merck.~

MERCURY IMIDO-SUCCINATE.--White powd.--SOL. in 25 parts water; slightly in alcohol.--Antisyphilitic, Alterative.--Said to be free from disagreeable local and secondary effects.--~Dose:~ 1/5 grn., hypodermically.

~Mercury Sulphate, Basic, Merck.~

MERCURY SUBSULPHATE; TURPETH MINERAL.--~Dose:~ _Emetic_, 2--5 grn.; _alterative_, 1/4--1/2 grn.; in pills or powd.

~Mercury Tannate Merck.~

Greenish-gray powd.; about 50% mercury.--Antisyphilitic.--~Dose:~ 1--2 grn., in pills.

~Mercury-Ammonium Chloride Merck.--U.S.P.~

WHITE PRECIPITATE; AMMONIATED MERCURY.--Not used internally.--_Preparation:_ Oint. (10%).

~Methyl Salicylate Merck,--U.S.P.~

SYNTHETIC OIL GAULTHERIA (WINTERGREEN).--~Dose:~ 5--30 [min.].

~Methylene Blue Merck.--C.P., Medicinal.~

Bluish cryst., or blue powd.--SOL. in 50 parts water.--USES: Rheumatism, malaria, cyst.i.tis, nephritis, etc.--~Dose:~ 2--4 grn., in capsules.--INJECTION: 1 grn.--MAX. D.: 15 grn., single or daily.--[Further information in "Merck's Digest" on "Methylene Blue,"

containing clinical reports.]

Mezereum--U.S.P.

MEZEREON.--Alterative.--~Dose:~ 5--10 grn.--_Preparations:_ F.E.

(irritant). Enters into Comp. Decoct. Sarsaparilla, and Comp. F.E.

Sarsaparilla.

Milk Sugar--U.S.P.

LACTOSE.--Nutritive, Diuretic--~Dose:~ 1--6 oz. a day, in milk.

~Monsel's Salt,~--see IRON SULPHATE, BASIC.

~Morphine Merck.--U.S.P.--Pure, Cryst.~

Almost insol. in water.--~Dose:~ 1/8--1/2 grn.--ANTIDOTES: Emetics, stomach tube, permanganate pota.s.sium, paraldehyde, picrotoxin, atropine, strychnine, caffeine, cocaine, exercise, electric shock, etc.--INCOMPATIBLES: Alkalies, tannic acid, pota.s.sium permanganate, etc.

~Morphine Hydrochlorate Merck.--U.S.P.~

SOL. in 24 parts water.--~Dose:~ 1/8--1/2 grn.