EDITED BY 



DIONYSIUS LARDNER, D.C.L., 



Formerly Professor of Natural Philosophy and Astronomy in University College, London. 



ILLUSTRATED BY ENGRAVINGS ON WOOD. 



VOL. XII. 



LONDON: 

 WALTON AND MABERLY, 



UPPER GOWER STREET, AND IVY LANE, PATERNOSTER ROW. 

 1856. 



