Extract of Bu′chu

Syn. Extractum buchu , E. diosmæ , L. Prep. 1. From buchu leaves, as the last. 2. (Ethereo-alcoholic; E. b. æthero-alcohol i cum , L.—W. Procter.) Buchu (in coarse powder), 1 lb.; ether, 4 fl. oz.; alcohol (rectified spirit), 12 fl. oz.; percolate without digestion, adding dilute alcohol until a pint of ethereo-alcoholic tincture is obtained, and suffer this to evaporate spontaneously; treat the residue in the displacer with dilute alcohol, till 2 pints are obtained; evaporate to a syrup, add the product of the first tincture, mix, and complete the evaporation.— Dose , 5 to 10 gr.; in diseases of the urinary organs, . 3. (Fluid; E. b. fluidum , L.—W. Procter.) Buchu leaves, 8 oz.; rectified spirit, 16 fl. oz.; for a tincture by displacement, adding water, until 12 fl. oz. have pa ed through; allow this to evaporate spontaneously until reduced to one half; next digest the ma in the percolator with cold water, 1 pint, for 12 hours, expre a pint, and evaporate this to 10 fl. oz.; lastly, add the 6 fl. oz. of residual tincture, agitate together, and in a few days filter, or decant the clear portion.— Dose , 1 to 2 teaspoonfuls. See Diosma .