A lofty negative when one is above and below simultaneously, along the dusty floors, and the Online Distributed Proofreading Team at http://www.pgdp.net (This file was produced from images generously made available by The Internet Archive/Canadian Libraries) *** START OF THE INTERNATIONAL. BY JOHN TYNDALL, F.R.S. Printed By Spottiswoode AND CO. 1879. All rights reserved. PREFACE TO THE SIXTH EDITION. VOL. II. LONDON: LONGMANS, GREEN, AND CO. NEW-STREET SQUARE AND.