│Infusum. │An infusion. Inject. │Injectio. │An injection. Min. or M. │Minim. │1–60 of a fluid drachm M. │Misce. │Mix Mass. │Massa. │A mass Mist. │Mistura. │A mixture. Pil. │Pilula or pilulæ │A pill or pills. ppt. │Preparata. │Prepared. Pulv. │Pulvis. │A powder. P.R.N. │Pro re nata. │As occasion requires. q. s. │Quantum sufficit. │A sufficient quantity. ℞ │Recipe. │Take. Rad. │Radix. │A root. S. or Sig. │Signatur. │Write. ss. │Semisis. │A half. Tinct. │Tinctura. │A tincture. 2 dis. │Duo dis. │Every two hours. f. ℥ or fl. │Fluid uncia or unciæ. │Fluid oz. or ounces. ───────────────────────┴───────────────────────┴─────────────────────── The succeeding chapter is composed of formulæ giving numerous examples of the different forms in which prescriptions are written. Good taste requires that all directions should be in the English language, and that hieroglyphics and absurd abbreviations should be discarded as much as possible. Very many physicians write the directions in latin, and the druggist is expected to write the same in English and attach a label thus written to the bottle containing the medicine. I have given some examples of the old-form prescriptions written entirely in latin, and also some where the new notation (figures, &c.) is used. Whoever reads them over will learn how to read prescriptions; but I have given none but such as I value highly, and I have used almost every one in my practice, and tested its excellence. I advise people to obtain these rather than those patent medicines whose composition is secret. The person who desires one of these prescribed medicines can obtain it by copying the formula _accurately_ and taking it to a druggist. I adopt the usual CLASSIFICATION OF REMEDIES.