Excerpt from The Magazine of Science, and Schools of Arts, Vol. 2: Intended to Illustrate the Most Useful, Novel and Interesting Parts of Natural History and Experimental Philosophy, Artistical Processes, Ornamental Manufactures, and the Arts of Life; Saturday, April 4, 1840 The following pages. Worthy of the utmost attention, and which must eventually lead to results of the utmost value to mankind. 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.