PRICE ONE SHILLING. 



VOL. XL NOVEMBER, 1859. No. 23. 



THE GEOLOGIST; 



AN ILLUSTRATED 



POPULAR MONTHLY MAGAZINE 



OP 



GEOLOGY. 



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



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

 undoubtedly ranks in the scale of the sciences next to Astronomy." — HerscheU; 

 Discourse on Study of Natural Philoso'pliy, 



LONDON: 



PUBLISHED AT THE OFFICE OF THE GEOLOGIST, 151, STRAND. 



PRINTED AT THE &BOL0GIST OFFICE, 154, STRAND, LONDON, 



