NATURAL HISTORY. 



EDITED BY 



P. MARTIN DUNCAN, M.B. (LOND.), F.R.S., F.G.S, 



PROFESSOR OF GEOLOOY IN AND HONORARY FELLOW OF KING'S COLLEGE, LONDON ; 

 CORRESPONDENT OF THE ACADEMY OF NATURAL SCIENCES, PHILADELPHIA. 



VOL. II. 



ILL U STRA TED. 



CASSELL & COMPANY LIMITED: 



LONDON, PARIS & MELBOURNE. 



1892. 

 [ALL RIQUTS RESERVED.] 



