Elementary Chemical Technics: A Handbook of Manipulation and Experimentation for Teachers of Limited Experience, and in Schools Where Chemistry Must Be Taught With Limited Appliances (Classic Reprint) - Tapa dura

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Excerpt from Elementary Chemical Technics: A Handbook of Manipulation and Experimentation for Teachers of Limited Experience, and in Schools Where Chemistry Must Be Taught With Limited Appliances

The office of this little book is expressed in its title. My faith that such a work may be of some service in the cause of science teaching, is founded in part upon a realization of what a valuable adjunct such a book would have been in the earlier years of my own teaching.

No attempt has been made to write a text-book of Chemistry. There are enough good works of that nature to meet the requirements of every school. But from a proper regard for brevity, and sometimes from a lack of appreciation of the teacher's needs on the part of authors, text-books fail to give that careful detail of direction which will insure success in experimentation.

In the chapter on the Metals I have made no mention of the more rare ones, considering only such as are likely to be worked with in the ordinary school courses.

The terms of both the English and Metric systems are used, for I find that the two systems are used about equally in schools, and the tables provided in text-books render the conversion from one system to the other an easy matter.

I wish to express my indebtedness to Prof. A. C. Boyden of the Bridgewater Normal, and to Mr. H. W. Tyler of the Massachusetts Institute of Technology, who have read the manuscript and proof-sheets, and given me valuable suggestions in my work.

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