[Illustration: MEDICINAL DYNAMETER _AND SCALE OF EQUIVALENTS_. _Engraved for the Second American Edition of Paris’s Pharmacologia._ EXPLANATION. _This Instrument will shew on bare inspection, the quantity of active matter contained in any given weight or measure (according as it is solid or liquid) of any Officinal compound, and the dose of any preparation which will be equivalent in strength to any given quantity of any other of the same class. The active principles, or Medicinal Bases, are distinguished by capital letters, placed in coloured squares; and each Officinal Preparation is marked by a line corresponding in colour with that of its active ingredient. If we require the quantity of active matter in any given dose of an Officinal Preparation, we have only to bring such preparation to the number in question and the figure opposite the active ingredient answers the question, while those opposite to the other compounds of the same class denote the equivalent quantities. Unless otherwise expressed, the figures denote Grains for the solids, and Minim for the liquids._ ] PHARMACOLOGIA. FOURTH AMERICAN, _FROM THE SEVENTH LONDON EDITION_. BY J. A. PARIS, M.D. F.R.S. F.L.S. FELLOW OF THE ROYAL COLLEGE OF PHYSICIANS OF LONDON, ETC., ETC., ETC. Quis Pharmacopœo dabit leges, ignarus ipse agendorum?—Vis profecto dici potest, quantum hæc ignorantia rei medicæ inferat detrimentum. GAUB: METHOD: CONCINN: FORMUL. WITH NOTES AND ADDITIONS, BY JOHN B. BECK, M.D. PROFESSOR OF MATERIA MEDICA AND MEDICAL JURISPRUDENCE IN THE UNIVERSITY OF THE STATE OF NEW-YORK, CORRESPONDING MEMBER OF THE MEDICAL SOCIETY OF LONDON, &C., &C. NEW-YORK: _W. E. DEAN, PRINTER_. COLLINS AND HANNAY, COLLINS AND CO., AND WHITE, GALLAHER AND WHITE. 1831. _Entered according to the Act of Congress, in the year One Thousand Eight Hundred and Thirty-one, by W. E. Dean, in the Clerk’s Office of the Southern District of New-York._ TO WILLIAM GEORGE MATON, M.D. F.R.S. FELLOW OF THE ROYAL COLLEGE OF PHYSICIANS, VICE-PRESIDENT OF THE LINNÆAN SOCIETY, &c., &c., &c. MY DEAR SIR, There is not an individual in the whole circle of the profession, to whom I could with greater satisfaction, or with so much propriety, dedicate this work, as to yourself.