EDITED BT 



DIONTSITJS LAEDNEE, D.C.L., 



Formerly Professor of Natural Philosophy and Aitroaouny in University College, Loudoa. 



ILLUSTRATED BT ENGRAVINGS ON WOOD. 

 VOL. I. 



LONDON : 

 WALTON AND MABERLY, 



UPPER GOWER STREET, AND IVY LANE, PATERNOSTER ROW. 

 1854. 



