Related entry: Pix Liquida (U. S. P.)—Tar
Preparation.—"Tar, one hundred grammes (100 Gm.) [3 ozs. av., 231 grs.]; water, two hundred and fifty cubic centimeters (250 Cc.) [8 fl℥, 218♏]; pumice, in moderately fine powder, one hundred and twenty-five grammes (125 Gm.) [4 ozs. av., 179 grs.]; stronger white wine (F. 440), a sufficient quantity to make one thousand cubic centimeters (1000 Cc.) [33 fl℥, 391♏]. Upon the tar, contained in a suitable vessel, pour two hundred and fifty cubic centimeters (250 Cc.) [8 fl℥, 218♏] of cold water, and triturate the mixture thoroughly; then pour off the water and throw it away. Mix the remaining tar thoroughly with the powdered pumice, and add one thousand cubic centimeters (1000 Cc.) [33 fl℥, 391♏] of stronger white wine. Stir frequently during 4 hours, then transfer the mixture to a wetted filter, and, after the liquid has passed, pour on enough stronger white wine to make the filtrate measure one thousand cubic centimeters (1000 Cc.) [33 fl℥, 391♏]"—(Nat. Form.).
Action, Medical Uses, and Dosage.—(See Tar.) When used internally, the dose may range from 1 to 2 fluid drachms. Externally, it is useful in certain skin affections, requiring the effects of tar and stimulation.
King's American Dispensatory, 1898, was written by Harvey Wickes Felter, M.D., and John Uri Lloyd, Phr. M., Ph. D.