_Spiritus Myrciae Compositus (Sp. Myrciae Co.), Compound Spirit of Myrcia, N.F._--Oils of myrcia, orange, pimenta, alcohol and water. Absolute alcohol content about 58 per cent. USES: Perfume and stimulant to the skin. =Oleum Myristicae (Ol. Myrist.), Oil of Myristica, U.S.P.= (Myristica Oil, Oil of Nutmeg).--A volatile oil. Nearly insoluble in water; soluble in alcohol. ACTION AND USES: Aromatic flavor and carminative. DOSAGE: 0.2 Cc. or 3 minims (U.S.P.). =Oleum Olivae (Ol. Oliv.), Olive Oil, U.S.P.=--A fixed oil. ACTION AND USES: Emollient, laxative and nutrient. DOSAGE: 30 Cc. or 1 fluidounce (U.S.P.). =Oleum Picis Liquidae Rectificatum (Ol. Pic. Liq. Rect.), Rectified Oil of Tar, U.S.P.= (Oleum Picis Liquidae, U.S.P. VIII, Rectified Tar Oil).--A volatile oil. Nearly insoluble in water; soluble in alcohol. ACTION AND USES: Externally antiseptic, irritant and parasiticide; used in skin diseases. DOSAGE: Internally, 0.2 Cc. or 3 minims (U.S.P.). _Mistura Olei Picis (Mist. Ol. Pic.), Mixture of Oil of Tar, N.F._ (Mistura Picis Liquidae, Tar Mixture).--Rectified oil of tar (3.5%) and chloroform (1%), with pure extract of glycyrrhiza, sugar and oil of peppermint in alcohol and water. Absolute alcohol content about 16 per cent. USES: Complex, disagreeable expectorant. DOSAGE: 8 Cc. or 2 fluidrachms (N.F.). _Petroxolinum Picis (Petrox. Pic.), Tar Petroxolin, N.F._ (Tar Petrox).--Rectified oil of tar (25%) in liquid petroxolin. _Unguentum Picis Compositum (Ung. Pic. Co.), Compound Tar Ointment, N.F._--Rectified oil of tar (4%), zinc oxide (3%), and tincture of benzoin in yellow wax, lard and cottonseed oil. =Oleum Pimentae (Ol. Piment.), Oil of Pimenta, U.S.P.= (Pimento Oil, Oil of Allspice).--A volatile oil. Nearly insoluble in water; soluble in alcohol. ACTION AND USES: Flavoring agent and carminative. DOSAGE: 0.2 Cc. or 3 minims (U.S.P.). =Oleum Pini Pumilionis (Ol. Pin. Pumil.), Oil of Dwarf Pine Needles, U.S.P.= (Dwarf Pine Oil).--A volatile oil. Nearly insoluble in water; soluble in alcohol. ACTION AND USES: More aromatic than oil of turpentine, and used as an inhalation in catarrh of the respiratory passages. =*Oleum Ricini (Ol. Ricin.), Castor Oil, U.S.P.=--A fixed oil. Soluble in equal parts of alcohol. ACTION AND USES: Effective and prompt cathartic, but likely to be followed by constipation and therefore not indicated in chronic constipation. Useful as an initial purge in acute diarrheas. DOSAGE: 15 Cc. or 4 fluidrachms (U.S.P.). _Emulsum Olei Ricini (Emul. Ol. Ricin.), Emulsion of Castor Oil, N.F._--Castor oil (35%), with acacia, flavored with tincture of vanilla, in syrup and water. USES: Renders castor oil somewhat less disagreeable. DOSAGE: 45 Cc. or 1-1/2 fluidounces (N.F.).