Oil of Horse-mint. Syn. Oleum monardæ (Ph. U. S.), L. From the fresh herb of Monarda punctata, a plant indigenous in the U.S. of America. Dark amber-coloured; fragrant; pungent; carminative; rubefacient; and vesicant.
Oil of Horse-rad′ish. Syn. Oleum armoraciæ, L. From the fresh roots of Cochlearia armoracia (Linn.), or common horse-radish. Pale yellow; heavier than water; acrid; vesicant; identical with that from black mustard. Prod. ·5% (nearly).
Oil of Hyssop. Syn. Oleum hyssopi, L. From the flowering herb of Hyssopus officinalis. Aromatic; stimulant. Prod. ·25% to ·33%.
Oil of Jargonelle Pear. See Amyl (Acetate).
Oil of Jas′min. Syn. Oil of jessamine; Oleum jasmini, O. j. volatile, L. From the flowers of Jasminum grandiflorum and J. Fragrans, carefully picked, by placing them in alternate layers with cotton wadding imbued with olive oil, in any suitable vessel, and renewing the flowers till the fixed oil becomes strongly odorous, and then distilling the wadding along with a little water. The volatile oils of hyacinths, jonquil, tuberose, violets, and most of the more delicate flowers, are obtained in the same way. Used in perfumery. From the East Indies.
Oil of Ju′niper. Syn. Juniperi oleum (B. P.), Oleum juniperi (Ph. L. E. & D.), O. è. baccis J., O. essentiale è. b. j., L. From either the wood, tops, or berries, preferably the last. The berries should be chosen fully grown, but still slightly green, and should be bruised before being placed in the still. In the Ph. L., English oil of juniper (O. juniperi Anglicum) is ordered. Colourless, or very pale greenish-yellow; odour and taste, sweet and terebinthinate; rather viscid; soluble in rectified spirit; rendered opaque and resinous by exposure and age. It is reputed carminative and diaphoretic, and possesses powerful diuretic properties, Sp. gr. ·911 (English, ·8688; foreign, ·8834—Brande). Prod. Green berries, ·25%; ripe do. (one year old), 3⁄4 to 1% (fully).
Pur. It is frequently adulterated with oil of turpentine, a fraud readily discovered by the lessened density, viscidity, and solubility, in rectified spirit, of the oil.
Obs. Oil of juniper consists of two oils—one, white and most volatile, sp. gr. ·8393; the other, dark-coloured and less volatile, sp. gr. ·8784; together with some resin left in the retort.
Oil, Krumholz. Syn. Oleum templinum, L. From Hungarian balsam, a terebinthinate exudation from the Pinus pumilio, or mountain pine of Southern Europe. Fragrant; golden yellow; tastes oily, acidulous, and resinous.
Oil of Lau′rel. Syn. Oil of sweet bay; Oleum lauri volatile, O. l. essentiale L. From either the berries or leaves of Laurus nobilis (Linn.), or sweet bay-tree. Pale yellow, clear, odorous, aromatic, stimulant, and narcotic. Sp. gr. ·871. Prod. From the leaves, 3⁄4 to 1% (fully).