Extract of Calum′ba. Syn. Extractum calumbæ, E. radicis c., L. Prep. 1. (B. P.) Calumba cut small, 1; water, 5; macerate in half the water for 12 hours, strain, and press; macerate again with the remaining water, strain, and press; mix and filter the liquors, and evaporate with the heat of a water bath to pill consistency.—Dose, 2 to 10 gr.
2. (Alcoholic—Ph. Bor.) Nearly as No. 3 (below), but using stronger spirit; the evaporation is to be conducted at a heat not above 167° Fahr., until it acquires the consistence of a pill-mass, which, after being rendered quite dry by a very gentle heat, is to be reduced to fine powder. It should have a brownish-yellow colour, and give a turbid solution with water.—Dose, 4 to 12 gr. They are all tonic and stomachic.
3. (Spirituous—P. Cod.) As EXTRACT OF BOX. The Ph. Baden orders spirit of ·944 to be used.—Dose, 5 to 15 gr.
Extract of Cannabis Indicæ. See Extract of Indian Hemp.
Extract of Canthar′ides. Syn. Extract of Spanish flies; Extractum cantharides, E. lyttæ, L. Prep. 1. (P. Cod.) From the tincture, as EXTRACT OF BOX.
2. (Soubeiran.) From a tincture prepared with spirit of the sp. gr. ·923 (about 2 u. p.).
3. (Acetic; E. c. aceticum, L.) From a tincture prepared with acetic acid, sp. gr. 1·048.
4. (Ethereal; E. c. æthereum, L.) From the ethereal tincture.
Obs. The ether, acid, and spirit distilled from the above must be either thrown away or used to make fresh extract, as it is highly poisonous. They are all for external use only, and should have the consistence of soft butter.
Extract of Car′damoms. Syn. Ethereal e. of c.; Extractum cardamomi æthereum, L. Prep. (W. Procter.) By spontaneous evaporation of the ethereal tincture. It consists of the volatile and fixed oils of the seeds and is used to aromatise pills, powders, &c.