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.