Colorless or white, odorless crystals or powder. Very slightly soluble in water (1:3,340) and soluble in alcohol (1:210). ACTION AND USES: Central analgesic, hypnotic and respiratory sedative and depressant; also constipative. Is only slightly depressant to the circulation. Eliminated mainly through the bowels. Should not be used to control cough if this is associated with marked expectoration. Its habit-forming power should be constantly remembered. DOSAGE: 0.008 Gm. or 1/8 grain (U.S.P.). =*Morphinae Hydrochloridum (Morph. Hydrochl.), Morphine Hydrochloride, U.S.P.= (Morphine Chloride). White, odorless needles, masses or powder. Soluble in water (1:17.5) and in alcohol (1:52). ACTION AND USES: See =Morphina=. DOSAGE: 0.008 Gm. or 1/8 grain (U.S.P.). _Syrupus Morphinae et Acaciae (Syr. Morph. et Acac.), Syrup of Morphine and Acacia, N.F._ (Syrupus Pectoralis, N.F. III, Jackson's Pectoral Syrup).--Morphine hydrochloride (0.055%) flavored with oil of sassafras in syrup of acacia. DOSAGE: 4 Cc. or 1 fluidrachm (N.F.). =*Morphinae Sulphas (Morph. Sulph.), Morphine Sulphate, U.S.P.=-- White, odorless crystals or masses. Soluble in water (1:15.2) and slightly soluble in alcohol (1:565). ACTION AND USES: See =Morphina=. DOSAGE: 0.008 Gm. or 1/8 grain (U.S.P.). _Syrupus Pini Strobi Compositus cum Morphina (Syr. Pin. Strob. c. Morph.), Compound Syrup of White Pine with Morphine, N.F._ (Syrupus Pini Strobi Compositus, N.F. III).--Morphine sulphate (0.04%) in compound syrup of white pine. Absolute alcohol content about 20 per cent. USES: Objectionable expectorant mixture containing morphine. DOSAGE: 2 Cc. or 30 minims (N.F.). =Moschus (Mosch.), Musk, U.S.P.= (Tonquin Musk, Deer Musk).--A dried animal secretion. ACTION AND USES: Antiquated analeptic. DOSAGE: 0.25 Gm. or 4 grains (U.S.P.). _Tinctura Moschi (Tr. Mosch.), Tincture of Musk, U.S.P._--Musk (5%) in diluted alcohol. Absolute alcohol content about 48 per cent. DOSAGE: 4 Cc. or 1 fluidrachm (U.S.P.). =MUCILAGINES, MUCILAGES.=--Aqueous solutions of gums or the mucilaginous principles of vegetable substances. For the various mucilages, see under the names of the respective drugs. =MULLAE, MULLS.=--Ointments of high fusing points spread on soft muslin or "mull." For the various mulls, see under the names of the respective active constituents. =Myrica (Myrica), Bayberry Bark, N.F.=--Bark of the root. ACTION AND USES: Formerly recommended as digestive, nutritive and nervous stimulant. No scientific indications for its use. DOSAGE: 0.5 Gm. or 8 grains (N.F.). _Pulvis Myricae Compositus (Pulv. Myric. Co.), Compound Powder of Bayberry, N.F._ (Composition Powder).--Bayberry bark (60%), Jamaica ginger (30%), capsicum and clove. USES: An obsolete carminative. DOSAGE: 1 Gm. or 15 grains (N.F.). =Myristica (Myrist.), Myristica, U.S.P.= (Nutmeg). ACTION AND USES: Aromatic and carminative.