Excerpt from Laboratory Arts; A Teacher's Handbook: Dealing With Materials and Tools Used in the Construction, Adjustment, and Repair of Scientific Instruments This book is intended for the' teacher who is more or less in charge of the apparatus he uses. The necessity for ability and skill in repairing or readjusting instruments of all kinds is evident to any science teacher who has conducted a year's experimental work; and it is hoped that sufficient informa tion and instruction are contained in the following pages to enable a teacher 'not only to acquire this necessary skill, but to turn it to account in the making of simple laboratory apparatus, and in the construction of new forms of apparatus and teaching devices. The ability to fix up a piece of uncatalogued apparatus, by which a point under discussion may be proved, is worth the expenditure of time and trouble in its attainment, but until now no systematic attempt has been made in this direc tion, and it is only through the organization of summer courses for science teachers in Ireland and Yorkshire that the prospect of success is held out. The present book has been written upon the basis of experience obtained in the conduct of the above summer courses, and though-incomplete, and doubtless full of imperfections, it should enable any searcher to obtain sufficient assistance to be able thence to help himself. 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.