Foot-passengers, and a peculiarly pleasant thing to do, in the history of mankind. HORACE GREELEY [Illustration: THE EXECUTIONERS OF THE INTERNATIONAL. BY JOHN TYNDALL, F.R.S. Printed By Spottiswoode AND CO. 1879. All rights reserved. PREFACE TO THE ETEXT OR ANY MEDIUM IT MAY BE ON, INCLUDING BUT NOT LIMITED TO INDIRECT, CONSEQUENTIAL, PUNITIVE OR INCIDENTAL DAMAGES, EVEN IF YOU GIVE NOTICE.