Produced by Chris Curnow, Paul Clark and the Online Distributed Proofreading Team at http://www.pgdp.net (This file was produced from images generously made available by The Internet Archive) Transcriber’s Note: Every effort has been made to replicate this text as faithfully as possible, including non-standard spelling and punctuation. Some changes of spelling and punctuation have been made. They are listed at the end of the text. Italic text has been marked with _underscores_. [Illustration] MEMORANDA ON POISONS. WORKS BY THE SAME AUTHOR. _Tanner’s Practice of Medicine._ Fifth American from the Sixth London Edition. Greatly Enlarged and Improved. Price, bound in cloth, $6 00; in leather, $7 00. _Tanner’s Practical Treatise on The Diseases of Infancy and Childhood._ Third American Edition, Revised and Enlarged, by Alfred Meadow, M. D. Octavo. Cloth, $3 50. _Tanner’s Index of Diseases and their Treatment._ With upwards of 500 Formulæ for Medicines, Baths, Mineral Waters, Climates for Invalids, etc., etc. Octavo. Price, $3 00. MEMORANDA ON POISONS. BY THE LATE THOMAS HAWKES TANNER, M.D., F.L.S. _THIRD AND COMPLETELY REVISED EDITION._ PHILADELPHIA: LINDSAY & BLAKISTON. 1872. HENRY B. ASHMEAD, PRINTER. EDITOR’S PREFACE. The present edition of Dr. Tanner’s “Memoranda on Poisons” is in some respects almost a new book. It was, as will be seen by the Author’s Preface to the last Edition, Dr. Tanner’s object to furnish the practitioner with a useful guide to his duties in cases of poisoning. Experience has, however, shown that the book is more useful to the student than to the practitioner; and, with a view to render it still more valuable to the former, it has in great measure been remodelled. Whilst, therefore, due attention has been paid to what might be called the clinical aspects of poisoning, its chemical bearings have been more closely attended to; and the more important and reliable tests have in each instance been given, as have also the more important processes for separating poisons from organic admixture. Sick of the old and clumsy classification of poisons into Irritants, Narcotics, and Narcotico-Irritants, the editor has endeavored to form some more rational groups of toxic agents. These groups are, it is true, quite provisional; and they are somewhat similar to those adopted by Dr. Guy in his admirable textbook on Forensic Medicine. They have, however, been worked out independently, whether they be worth anything or no. Briefly they are these:— Corrosives.—Simple Irritants, Mineral, Vegetable, and Animal.—Irritant Gases.—Specific Irritants, Mineral, Vegetable, and Animal.—Neurotics: subdivided into Narcotics, Anæsthetics, Inebriants, Delirants, Convulsives, Hyposthenisants, Depressants, Asphyxiants,—and Abortives.