Excerpt from Heat IT was with considerable hesitation that I sanctioned the Publishers' proposal to print a very large number Of copies Of the first edition Of this work. Some of my reasons will be found in the former Preface, reprinted below especially those depending on the fact that the work was written, in occasional intervals Of comparative leisure, during several very busy years. 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.