Excerpt from Biogen: A Speculation on the Origin and Nature of Life The treatife having found favor in fome eyes in whore penetra tion I have confidence is now republifhed without other change than the addition of this Preface, the following Introduction, an Appendix, and fome foot-notes here and there. Should the line of thought prefented be found to lead, or even to tend, in the right direetion, it may be followed up hereafter; the Author being now in pofition to exprefs himfelf more fully, freely and explicitly on the fubjeet than he was when Biogen was firft publilhed. 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.