--'i^RICE ONE SHILLING. 
VOL. III. 
JULY, 1860. 
No. 31. 
THE GEOLOGIST; 
AN ILLUSTRATED 
POPULAR MONTHLY MAGAZINE 
OF 
GEOLOGY. 
EDITED BY S. J. MACKIE, F.G.S., r.S.A. 
" Geology, in the magnitude and sublimity of the objects of which it treats, 
undoubtedly ranks in the scale of the sciences next to Astronomy." — Hersckdl : 
IHscourse on Study of Natural Philosophy. 
PUBLISHED AT THE OFFICE OF THE GEOLOGIST, 156, STRAND ; 
BAILLIERE, BKOTHERS, 440, 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, STRAOT), LOKDOK. 
