A MANUAL OF CHEMICAL ANALYSIS AS APPLIED TO THE EXAMINATION OF MEDICINAL CHEMICALS. A GUIDE FOR THE DETERMINATION OF THEIR IDENTITY AND QUALITY, FOR THE USE OF PHARMACISTS, PHYSICIANS, DRUGGISTS, MANUFACTURING THIRD EDITION, THOROUGHLY REVISED AND GREATLY ENLARGED. BY FREDERICK HOFFMANN, A.M., PH.D., PUBLIC ANALYST TO THE STATE OF NEW YORK, ETC., AND FREDERICK B. POWER, PH.D., PROFESSOR OF ANALYTICAL CHEMISTRY IN THE PHILADELPHIA COLLEGE OF PHARMACY. Entered according to Act of Congress, in the year 1883, by HENRY C. LEA'S SON & CO., in the Office of the Librarian of Congress. All rights reserved. COLLINS, PRINTER. PREFACE TO THE THIRD EDITION. THE third edition of this work has been thoroughly revised and to a large extent re-written, in order to make it comply with the present compass of chemical knowledge, as also with the recently issued new editions of the Pharmacopoeias of the United States of America and of the German Empire. The general and original plan and character of the work have been retained; the first part has been much enlarged, so as to afford an explicit and comprehensive guide and work of reference to both student and expert. All the articles of the second part have been carefully revised and greatly enlarged, many new ones added, as also the most approved methods for the separation, identification, and, in most cases, for the quantitative estimation of the chemical poisons likely to be met with in forensic research. As in former editions, the aim has been to render each article complete in text and illustrations, so as to avoid, as far as possible, references to other articles. The German, French, and Spanish names have been added, as also a large number of new illustrations of apparatus and forms of crystals. The senior author desires to express his obligations and thanks to his friend and associate Dr. FREDERICK B. POWER, to whose efficient and able assistance all credit for the superiority of the present edition is due. NEW YORK, February, 1883. 334338 |