Excerpt from Pike's Illustrated Descriptive Catalogue of Optical, Mathematical, and Philosophical Instruments, Vol. 1 of 2: Manufactured, Imported, and Sold by the Author; With the Prices Affixed at Which They Are Offered in 1865 The instruments illustrated in our modern works on natural philosophy are too frequently represented by Old and Obsolete cuts, mere copies, book after book, for many years back, furnishing but little idea of more modern articles. 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.