PRICE ONE SHILLING. 



VOL. III. 



SEPTEMBER, 1860. 



No. 33. 



THE GEOLOGIST; 



AN ILLUSTRATED 



POPULAR MONTHLY MAGAZINE 



OF 



GEOLOGY 



EDITED BY S. J. MACKIE, F.G.S., F.S.A. 



" Geology, in the magnitude and sublimity of tlie objects of which it treats, 

 undoubtedly ranks in the scale of the sciences next to Astronomy."- -Ifersc/ieW ; 

 Discourse on 8tudy of Natural Philosophy. 



LONDON: 



PUBLISHED AT THE OFFICE OP THE GEOLOGIST, 156, STRAND. 



BAILLIERK, BROTHERS, 400, BROADWAY, NEW YORK; B. DAWSON & SONS, 



MONTREAL. 



MESSRS. J. B. BAILLIERE ET FILS, RUE HAUTEFEUILLE, PARIS. 

 C. BAILLY BAILLIERE, CALLE DEL PRINCIPE, MADRID. 



PRINTED AT THE GEOLOGIST OFFICE, 156, STRAND, LONDON. 



