JOHN TYNDALL, LL.D., F. R. S.
Reading edition
WITH TWENTY-FIVE ILLUSTRATIONS DRAWN AND ENGRAVED UNDER THE DIRECTION OF THE AUTHOR
NEW YORK D. APPLETON AND COMPANY 1899
Copyright, 1872, By D. APPLETON AND COMPANY.
Electrotyped and Printed at the Appleton Press, U. S. A.