Oil of Black Pep′per (by Infusion). Syn. Oleum piperis infusum, L. From black pepper, in coarse powder, as Oil of Capsicum. Stimulant and rubefacient; in frictions.
Oil of Poison Oak. Syn. Oleum rhois toxicodendri, L. From the leaves, as OIL OF BELLADONNA Externally; in paralysis, &c.
Oil of Rhu′barb. Syn. Oleum rhei, L. From rhubarb (in powder), 1 part; oil of almonds, 8 parts; digested together in a gentle heat for 4 hours, and strained, with expression. As an application to indolent ulcers, and as a friction over the abdomen in diarrhœa, English cholera, &c., or as a laxative when the stomach will not bear medicine.
Oil of Ro′′ses. Syn. Oleum rosæ, O. rosaceum, O. r. infusum, O. rosatum, L. Prep. From the fresh petals, pulled to pieces, crushed, and digested for 2 or 3 days in the sun, or a warm situation, in 4 times their weight of olive oil, and then pressed; the process being repeated with fresh roses. Ph. E. 1744 and P. Cod. are nearly similar. Almond, BEN, or OLIVE OIL, coloured with ALKANET, and scented with attar of roses, is now almost universally sold for it. Used for the hair.
Oil of Rue. Syn. Oleum rutæ (infusum), L. Prep. (P. Cod.) From fresh rue, bruised, as Oil of chamomile. Reputed antispasmodic, emmenagogue, stimulant, and vermifuge. In frictions.
Oil of St John’s Wort. Syn. Oleum hyperici (Ph. L. 1746), O. h. simplex, Balsamum h., L. From the flowers, 1 part; olive oil, 6 parts; digested together until the oil is well coloured. Antispasmodic, stimulant, and resolvent. A mixture of equal parts of RAPE OIL and GREEN ELDER OIL is usually sold for it.
Oil of Scam′mony. Syn. Oleum scammonii, O. purgans, L. Prep. (Van Mons.) From scammony (in powder), 1 dr.; hot oil of almonds, 3 fl. oz.; triturate together until cold, and the next day decant the clear portion.—Dose, 1⁄2 to 1 table-spoonful.
Oil of Stramo′′nium. Syn. Oleum stramonii, L. Prep. (P. Cod.) From the leaves of thorn apple or stramonium, as OIL OF BELLADONNA. Anodyne and discussive; as an application to painful tumours, joints, &c.
Oil of Tobac′co (by Infusion). Syn. Oleum tabaci, O. t. infusum, L. From fresh tobacco leaves (bruised), like OIL OF CHAMOMILE. As an application in ringworm, irritable ulcers, pediculi, &c.; and as a friction in itch, neuralgia, painful indurations, &c. It must be used with extreme caution, as it is poisonous.
Oil of Tooth′wort. Syn. Oleum squamariæ, L. From the herb of Lathræa squamaria (Linn.), as Oil of St John’s wort. Astringent and vulnerary. This must not be confounded with another preparation sometimes called ‘Oil of toothwort’ (Oleum plumbaginis Europææ),and which has been occasionally used in itch, as the latter is acrid and apt to cause much irritation.