b. (M. Puche.) From cubebs and proof spirit, equal parts, by percolation; without subsequent evaporation. Represents its own weight in cubebs.—Dose, 1⁄2 to 1 fl. dr.
c. (Ph. U. S. 1851.) Cubebs, 1 lb. (nearly); ether, q. s.; make 1 quart of tincture; then distil off 11⁄2 pint of the ether by the heat of a water bath, and expose the residuum in a shallow vessel until the remainder of the ether has evaporated.
d. (Ph. U. S.) Extractum cubebæ fluidum. Cubebs in moderately fine powder, 16 oz. (troy); alcohol (·817), 16 oz. (old measure). Macerate in a closed percolator for 4 days, and then let the percolation commence, and finish it by adding more menstruum until 24 oz. (old measure) have been obtained; reserve the first 14 oz., evaporate the remaining 10 oz. to 2 oz., and mix this with the reserved portion.
4. (Oleo-resinous; Extractum cubebæ, E. cubebrum, E. c. oleo-resinosum, L.)—a. (M. Dublanc.) The essential oil resulting from the careful distillation of any given quantity of cubebs, is mixed with the resinous extract obtained by evaporating a tincture of the dried residuum made with rectified spirit; the whole being reduced to the consistence of a thick
syrup. 1 lb. of cubebs yields about 6 oz. of this extract.
b. (Labelonge.) Cubebs are first exhausted with ether, and then with proof spirit, in a displacement apparatus; the alcoholic tincture is evaporated to an extract over a water bath, and when cold, the ethereal tincture is mixed with it, and the mixture abandoned to spontaneous evaporation until the ether is volatilised.
c. (W. Procter.) An ethereal tincture (by displacement) is poured into a large retort, and 5-6ths is drawn over by the heat of a water bath; the evaporation of the residuum, to the proper consistence, is carried on at a heat not exceeding 120° Fahr. The formula of the Ph. Baden is nearly similar. Said to represent 6 to 8 times its weight in cubebs. 1 lb. yields 2 oz. of this extract.
d. (Hamb. Cod. 1845.) This resembles a (above).
Obs. This extract has a darkish brown colour, and tastes and smells strongly of cubebs. It is only slightly soluble in water.—Dose, 5 gr. to 20 gr.; made into an emulsion or pills, or enclosed in a capsule. See Cubebs.
Extract of Cu′cumber. See Elaterium.