Excerpt from Elementary Lessons in Physics: Mechanics (Including Hydrostatics) And LightApparatus for the course can be obtained from the fol lowing well-known manufacturers: The Chicago Laboratory Supply and Scale Company, 9 West Randolph Street, Chicago. The Franklin Educational Company, Harcourt Street, Boston. The Knott Company, 16 Ashburton Place, Boston. The Ritchie Company, Brookline, Mass. The Ziegler Electric Company, 141 Franklin Street, Boston.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis 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.