Excerpt from The Young Man's Book of Knowledge: Containing a Familiar View of the Importance of Religion, the Works of Nature, Logic, Eloquence, the Passions, Matter and Motion, Magnetism, Mechanical Powers, Hydrostatics, Hydraulics, Optics, Acoustics, Electricity, Galvanism, Geometry, &C Flattered by the reception the work has met with, and desirous of rendering it as complete as possible, the editor has in this edition, added a general Index, for the use of those who may wish to refer occasionally to any particular parts of the volume. This, he hopes, will be found a useful appendage. 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.