Excerpt from A Text-Book of Inorganic Chemistry It follows from the above statement that the theoretical part of the subject is distributed throughout the book. The different topics are dealt with as Opportunity offers, but the treatment of any particular subject is postponed till facts illustrating it have been mentioned. The subject in question is then considered as fully as space permits - a mode of procedure which appears preferable to dealing with it in a fragmentary manner in different parts of the book. The latter method may usefully be employed for lectures, but the former method greatly increases the value of the book for purposes of reference and revision. As regards the order, I have also been guided to some extent by the historical development of the science. Subject to the above considerations, the more important branches of chemical theory, including the Principles of Chemical Equilibrium, the determination of Molecular Weights in Solu tion, Electrolysis and Electrolytic Dissociation, are introduced at a fairly early stage of the work, and their applications are repeatedly illustrated in the latter part of the book. The Periodic System is described after the non-metals, and serves as the basis for the discussion of the metals and their com pounds. One of the main tasks of a teacher is so to familiarize the student with a general principle that he learns to apply it with confidence. The mere statement of a principle, in the expectation that the student will straightway apply it in his later work, is useless. It will be found that the subjects usually included in an Elementary Course, such as Stage I. Of the Board of Education, are all dealt with in the early part of the book, and the more advanced work in the later chapters. Further division of the subject into stages leads inevitably to the result that information regarding any important element has to be sought for in different parts of the book, thus rendering it much less useful for purposes of reference and revision. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.