Liquor, Blistering. B. Syn. Liquor Epispasticus, Linimentum cantharides. Prep. Mix cantharides in powder, 8 oz.; and acetic acid, 4 fl. oz. Pack in a percolator, and after 24 hours pass ether slowly through until 20 fl. oz. are obtained. Keep in a stoppered bottle.
Liquor, Boyle’s Fu′′ming. The perhydrosulphate of ammonia.
Liquor of Calum′ba. Syn. Liquor calumbæ, L. Same as CONCENTRATED INFUSION OF CALUMBA.
Liquor of Cam′phor. See Essence.
Liquor of Chiret′ta. Same as Concentrated infusion of chiretta.
Liquor of Cincho′na. Syn. Liquor of bark; Concentrated infusion of bark, Inspissated i. or B.; Inspissated i. of b.; Infusum cinchonæ spissatum (Ph. L.), L. Prep. 1. (Ph. L.) Yellow cinchona bark (bruised), 3 lbs., is macerated in distilled water, 6 pints, at two successive operations, as directed under EXTRACT OF CINCHONA—Ph. L.; the mixed infusions are evaporated by the heat of a water bath to one fourth, and placed aside to settle; the clear portion is decanted, the remainder strained, and the mixed liquid again evaporated until its sp. gr. reaches 1·200; to this, when cold, rectified spirit is dropped in, by degrees, “so that 3 fl. dr. may be added to each fl. oz. of the liquor;” lastly, allow it to repose for 20 days, that the dregs may subside.
Obs. It is not at all clear whether the College means 3 fl. dr. of spirit to be added to each fl. oz. of the liquid before its addition, or that it is to be added so that each fl. oz. of the product shall contain that quantity. We presume the former. 1 fl. dr. of this preparation is said to represent fully 4 fl. oz. of the INFUSION OF CINCHONA—Ph. L.; but it is obvious that it must be liable to great variations in strength. “In a general way 1 fl. dr. may be considered equal to 3 fl. oz. of the infusion.” (Pereira.) As commonly met with, this preparation is nearly destitute of the cinchona alkaloids.
2. Yellow cinchona bark, bruised, 56 lbs., and water holding in solution sulphuric acid, 11⁄2 lb., are macerated together, with occasional agitation, in a covered earthen vessel, for 48 hours, after which the liquor is expressed, and the residuum or marc is treated with fresh water; the mixed strained liquid is then evaporated as rapidly as possible in earthenware, to exactly 6 lbs.; to this rectified spirit, 11⁄4 lb., is added, and the whole is set aside for a week or 10 days; the clear portion is, lastly, decanted and preserved in well-closed bottles. The product
is very rich in quinine. It is 96 times as strong as the DECOCTION OF CINCHONA—Ph. L., and 12 times as strong as the above preparation of the Ph. L. This preparation resembles the ‘LIQUOR CINCHONÆ’ sold by certain houses in the trade at 24s. per lb., wholesale.
3. Exhaust the bark as above by maceration in 3 successive waters without acid, filter, evaporate the mixed liquors to 7 lbs., and proceed as before. Inferior to the last, and less rich in the cinchona alkaloids. Very thick; scarcely liquid.