Oil of Belladon′na. Syn. Oleum belladonnæ (P. Cod.), L. Prep. From the fresh leaves, bruised, 1 part; olive oil, 4 parts; digested together at a gentle heat until the moisture is evaporated; the oil is then strained off with pressure, and filtered.
Oil of Cantha′rides. Syn. Oleum cantharidis, O. cantharidibus, L. Prep. (P. Cod. 1839). From Spanish flies (powdered), 1 part; olive oil, 8 parts; as Oil of Belladonna. Stimulant and rubefacient. Used as a dressing to indolent sores, blisters, &c.; and in dropsy, rheumatism, gout, &c., Oil of the oil-beetle (Meloe proscarabæus—Linn.) is prepared in a similar manner.
Oil of Cap′sicum. Syn. Oleum capsici, L. Prep. (Dr Turnbull.) From powdered capsicum or Cayenne pepper, 4 oz., olive oil, 1 pint; digested together for 6 hours, with heat, and strained. Stimulant; rubefacient in colic, cholera, &c.
Oil of Cham′omile. Syn. Oleum anthemidis,
Ol. chamæmeli, L. From the dried flowers (rubbed to pieces), 1 part, olive oil, 8 parts; digested together, with heat, for 6 hours. Stimulant, emollient, and vermifuge.
Oil of Col′ocynth. Syn. Oleum colocynthidis, L. From the pulp, as Oil of Chamomile. Diuretic. In dropsy, neuralgia, rheumatism, worms, &c.
Oil of Earth′worms. Syn. Oleum lumbricorum. (E. Ph. 1744.) Washed earthworms, 1⁄2 lb.; olive oil, 11⁄2 pint; white wine, 1⁄2 pint. Boil gently till the wine is consumed, and press and strain.
Oil of Elder-flowers. Syn. White oil of elder; Oleum sambuci album, O. sambucinum (P. Cod.), L. Prep. From the flowers, as Oil of Chamomile. Emollient and discussive.
Oil of Elder-leaves. Syn. Green oil, Green oil of elder, Oil of Swallows; Oleum viride, O. sambuci viride, L. Prep. 1. Green elder leaves, 1 lb.; olive oil, 1 quart; boil gently until the leaves are crisp, press out the oil, and again heat it till it turns green.
2. As before, but by maceration, at a heat under 212° Fahr. More odorous than the last.