Excerpt from Aeronautica, or the History of Aviation and Aerostation: Told in Contemporary Autograph Letters, Books, Broadsides, Drawings, Engravings, Manuscripts, Newspapers, Paintings, Posters, Press Notices, Etc., Dating From the Year 1557 to 1880 About the same period the great painter, Leonardo da Vinci, approached the problem in a more scientific spirit, and his notebooks contain several sketches of wings to be fitted to the arms and legs. 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.