Présentation de l'éditeur :
Poo PREFACE. The purpose of this book is to promote the more efficient teaching of chemistry by modern methods. The choice and arrangement of subject-matter is based on the authors extended experience with students of varied abihty. The book as a whole is the outcome of a desire to provide a course in chemistry which shall be a judicious combination of the mductive and deductive methods. The concise directions and specific questions in the experiments aim to obviate the difficulties and perplexities which hinder the progress of beginners in chemistry. The experiments are representative. No important ones have been omitted, and no senseless or dangerous ones have been included. Every experiment need not be done by each pupil. I ndeed, many experiments may be advantageously performed by the teacher either on the lecture table or in the laboratory; others may be done by the more skilful students and the results utilized in the class-room. Abundant material has been purposely provided to meet varied conditions. The Teacher sS upplement suggests different uses of many experiments, and the author invites correspondence regarding the adaptation of the book to special demands. Two supplementary sets of questions arise from most completed experiments. One class may and often must be answered in the laboratory where necessary data are available. The Laboratory Exercises aim to meet this demand.
(Typographical errors above are due to OCR software and don't occur in the book.)
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Présentation de l'éditeur :
This book was originally published prior to 1923, and represents a reproduction of an important historical work, maintaining the same format as the original work. While some publishers have opted to apply OCR (optical character recognition) technology to the process, we believe this leads to sub-optimal results (frequent typographical errors, strange characters and confusing formatting) and does not adequately preserve the historical character of the original artifact. We believe this work is culturally important in its original archival form. While we strive to adequately clean and digitally enhance the original work, there are occasionally instances where imperfections such as blurred or missing pages, poor pictures or errant marks may have been introduced due to either the quality of the original work or the scanning process itself. Despite these occasional imperfections, we have brought it back into print as part of our ongoing global book preservation commitment, providing customers with access to the best possible historical reprints. We appreciate your understanding of these occasional imperfections, and sincerely hope you enjoy seeing the book in a format as close as possible to that intended by the original publisher.
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