Oleum Origani

Lond. Dub. Oleum Volatile Origani Marjoranae, Edin. Oil of common Marjoram.

Syn. Huile essentiale d' Origan (F.), Dostohl (G.), Olio di Grigano (I.), Azeyte de Origane Sylvestre (S.).

1 Baume

2 Peppermint drops or lozenges are a mixture of starch, sugar, mucilage of tragacanth, and oil of peppermint.

3 Lewis.

One hundred and fifty pounds of dried leaves of common marjoram yield fifteen ounces of oil1, of a yellow colour, having the odour of the plant, and a hot acrid taste. Its specific gravity is .940.3

Medical properties and uses. - On account of its acrimony, this oil is never exhibited internally. It is used to allay toothach; two or three drops, on a piece of cotton, being put into the carious tooth.

Oleum Pimentae

Lond. Oleum Volatile Myrti Pimentae, Edin. Oleum Baccarum Pimentae, Dub. Oil of Pimento.

Syn. Huile essentiale de Poivre de Jamaique (F.), Nelherpfefferohl (G.), Olio di Pimento (I.)

This oil has the odour of the Pimento, with its pungent taste in an increased degree. It is of a reddish brown colour, is heavier than water, and its specific gravity 1.021.

Medical properties and uses. - It has the same properties as allspice in a greater degree; and is given in dyspeptic affections, colic, and tympanitis, in doses of from iij. to v. rubbed with sugar, or in any proper vehicle.

Oleum Rosmarini

Lond. Dub. Oleum Volatile Rosmarini officinalis, Edin. Oil of Rosemary.

Syn. Huile essentiale de Romarin (F.), Rosmarinbhl (G.), Olio di Rosma-rino (I.).

Twenty-four pounds of the plant yield one ounce of a fluid colourless oil3, the odour of which is less agreeable than that of the plant. It deposits crystals of camphor when long kept. Its specific gravity is .9108.

Medical properties and uses. - It is stimulant; and frequently enters into the composition of liniments. The dose, as an internal remedy, may be from iij. to vj., but it is scarcely ever ordered.

Oleum Rutae. Dub. Oil of Rue

Twenty-one pounds of rue yield fifty-nine grains of oil 4, which has the strong, ungrateful odour and taste of the plant. When recently drawn, the colour of this oil is yellow; it deepens to a brown by age, and deposits a brownish, resinous, sediment. It congeals at 40° of Fahrenheit.

Medical properties and uses. - Oil of rue is stimulant and antispasmodic. It is sometimes given in hysteria, and in the convulsive affections of infants attendant on dentition; and is used as a rubefacient in palsy. The dose is from ij. to vj.