ACTION AND USES: A hypnotic producing in ordinary doses no other symptoms than sleep. The sleep comes on in about an hour, though in some cases it may be much longer delayed. DOSAGE: 0.75 Gm. or 12 grains (U.S.P.), best administered in hot milk or other hot drinks. =*Sulphonmethanum (Sulphonmeth.), Sulphonmethane, U.S.P.= (Sulphonal).--Diethylsulphonedimethylmethane. Colorless, odorless and nearly tasteless crystals or powder. Slightly soluble in water (1:365) and soluble in alcohol (1:60). ACTION AND USES: Hypnotic and sedative. Has properties similar to those of sulphonethylmethane, but usually acts somewhat more slowly. DOSAGE: 0.75 Gm. or 12 grains (U.S.P.). Preferably administered in hot milk or other hot drinks. =*Sulphur Lotum (Sulphur Lot.), Washed Sulphur, U.S.P.=--S. Fine, yellow, odorless, tasteless powder. Insoluble in water and in alcohol. ACTION AND USES: Used locally in parasitic diseases of the skin and as a mild cathartic especially in hemorrhoids. DOSAGE: 4 Gm. or 1 drachm (U.S.P.). _Trochisci Sulphuris et Potassii Bitartratis (Troch. Sulphur. et Pot. Bitart.), Troches of Sulphur and Potassium Bitartrate, N.F._ (Troches of Sulphur and Cream of Tartar).--Each troche contains washed sulphur (0.3 Gm. or 5 grains) and potassium bitartrate (0.06 Gm. or 1 grain) with tragacanth, sugar and oil of orange. DOSAGE: 1 troche (N.F.). Dose so small as to be practically worthless. =*Sulphur Praecipitatum (Sulphur Praec.), Precipitated Sulphur, U.S.P.= (Lac Sulphuris, Milk of Sulphur).--S. Made by precipitating a solution of calcium sulphide with hydrochloric acid. Fine, pale yellow, odorless, tasteless powder. ACTION AND USES: Same as those of washed sulphur; more active and irritant. DOSAGE: 4 Gm. or 1 drachm (U.S.P.). =*Sulphur Sublimatum (Sulphur Sublim.), Sublimed Sulphur, U.S.P.= (Flowers of Sulphur).--S. Fine, yellow powder having a slight, characteristic odor and a faintly acid taste. ACTION AND USES: Same as those of washed sulphur. DOSAGE: 4 Gm. or 1 drachm (U.S.P.). _Petroxolinum Sulphuratum (Petrox. Sulphur.), Sulphurated Petroxolin, N.F._ (Sulphurated Petrox).--Sublimed sulphur (3%) in linseed oil, oleic acid and liquid petroxolin. _Petroxolinum Sulphuratum Compositum (Petrox. Sulphur. Co.), Compound Sulphurated Petroxolin, N.F._ (Compound Sulphurated Petrox).--Sulphurated petroxolin (10%), in oil of cade, thymol, eucalyptol, oil of turpentine and liquid petroxolin. _*Unguentum Sulphuris (Ung. Sulphur.), Sulphur Ointment, U.S.P._--Sublimed sulphur (15%) in benzoinated lard. _Unguentum Sulphuris Alkalinum (Ung. Sulphur. Alk.), Alkaline Sulphur Ointment, N.F._--Sublimed sulphur (20%) and potassium carbonate (10%) in water and benzoinated lard.