THE 
GEOLOGICAL MAGAZINE: 
OB, 
Iftonthlg Jotipal (Scologg : 
WITH WHICH IS INCORPORATED 
“THE GEOLOG-IST.” 
NOS. CLI. TO CLXII. 
EDITED BY 
HEXET WOODWAKD, F.E.S., F.G.S., F.Z.S., 
VICB-PRESIDENT OF THE GEOLOGISTS ASSOCIATION; 
MEMBEB OF THE AMERICAN PHILOSOPHICAL SOCIETY, PHILADELPHIA; 
HONOBAHY MEMBEB OF THE GBOLOGICAL SOCIETIES OF EDINBURGH, GLASGOW, AND NOBWICB ; 
COKBESPONDING HERBER OF THE GEOLOGICAL SOCIETY OF BELGIUM; OF THE NATURAL 
HISTOBY SOCIETY OF MONTREAL; AND OF THE LYCELM OF 
NATURAL HISTOBY, NEW YORK. 
ASSISTED BY 
PROFESSOR JOHN MORRIS, F.G.S., &c., &<?., 
AND 
ROBERT ETHERIDGE, F.R.S., L. & E., F.G.S., &c. 
NEW SEEIES. DECADE TI. YOL. IV. 
JANUARY— DECEMBER, 1877. 
LONDON: 
TRÜBNER & Co., 57 and 59, LUDGATE HILL. 
F. SAYT, 77, BOULEYAET ST.-GERMAIX, PARIS. 
1877. 
