Excerpt from The Boston School Compendium of Natural and Experimental Philosophy: Embracing the Elementary Principles of Mechanics, Hydrostatics, Hydraulics, Pneumatics, Acoustics, Pyronomics, Optics, Electricity, Galvanism, Magnetism, Electro-Magnetism,& Astronomy; With a Description of the Steam and Locomotive Engines Annals of Philosophy; Arnott's Elements of Physic; Bigelow's Technology; Cambridge Physics; Chambers' Dictionary; En field's, Olmsted's, Blair's, Bakewell's, Draper's, Grand's, Jones', Comstock's, and Conversations on Natural Philosophy; Franklin's Philosophical Papers; Henry's Chemistry; King's Manual of Elec tricity; Lardner on the Steam Engine; Library of Useful Knowl edge; Paxton's Introduction to the Study of Anatomy; Pambour on Locomotive Engines on Railways; Phillips' Astronomy; Silli man's Journal of Science; Singer's Electricity; Scientific Class Book; Scientific Dialogues; Smith's Explanatory Key; The Year Book;, Turner's Chemistry; Wilkins' Astronomy; Worcester's and the American School Geography. 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.