London: C. J. CLAY AND SONS, CAMBRIDGE UNIVERSITY PRESS WAREHOUSE, AVE MARIA LANE. Cambridge: DEIGHTON, BELL, AND CO. Leipzig: F. A. BROCKHAUS. FELLOW AND PRÆLECTOR IN CHEMISTRY OF GONVILLE AND AND DOUGLAS CARNEGIE, B.A. DEMONSTRATOR IN CHEMISTRY AND FORMERLY SCHOLAR OF CAMBRIDGE. A COMPANION-VOLUME TO PATTISON MUIR AND SLATER'S CAMBRIDGE: AT THE UNIVERSITY PRESS 1887 [All Rights reserved.] PREFACE. THIS book forms one part of a course of elementary chemistry; the other part is contained in the companionvolume entitled Elementary Chemistry. The two books are intended to be used together, the one being complementary to the other. The third part of this book deals with subjects which are only touched on in the companion-volume; this part should be used in conjunction with portions of the Principles of Chemistry by one of the authors of the present book; references to original papers to be consulted are also given in this part. The aim of the authors has been to arrange a progressive course of practical chemistry, in which as the experiments become more difficult the reasoning becomes more close and accurate. The arrangement of the course and the selection of the experiments are the outcome of experience gained in teaching chemistry for many years. Most of the experiments described can be performed with the apparatus to be found in every moderately wellfurnished laboratory. To encumber a new book on practical chemistry with the details of qualitative and quantitative analysis—subjects treated so fully in numberless manuals-appeared to the authors to be unwise. Many of the experiments in the |