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GHOLOGICAL MAGAZINE: 
oR, 
Monthly Journal of Geology: 
WITH WHICH IS INCORPORATED 
Try Gb OL OG lS r. 
NOS. CCXCY. TO CCCVI. 
EDITED BY 
HENRY WOODWARD, LL.D., F.B.S., F.GS., F.Z.S., FRMS., 
OF THE BRITISH MUSEUM OF NATURAL HISTORY ; 
VICE-PRESIDENT OF THE PALHONTOGRAPHICAL SOCIETY, 
MEMBER OF THE LYCEUM OF NATURAL HISTORY, NEW YORK; AND OF THE AMERICAN PHILOSOPHICAL 
SOCIETY, PHILADELPHIA; HONORARY MEMBER OF THE YORKSHIRE PHILOSOPHICAL 
SOCIETY; OF THE GEOLOGISTS’ ASSOCIATION, LONDON; OF THE GEOLOGICAL 
SOCIETIES OF EDINBURGH, GLASGOW, HALIFAX, LIVERPOOL, AND NOR- 
WICH; CORRESPONDING MEMBER OF THE GEOLOGICAL SOCIETY 
OF BELGIUM; OF THE IMPERIAL SOCIETY OF NATURAL 
HISTORY OF MOSCOW; OF THE NATURAL HISTORY 
SOCIETY OF MONTREAL; AND OF THE 
MALACOLOGICAL SOCIETY 
OF BELGIUM. 
ASSISTED BY 
ROBERT ETHERIDGE, F.R.S. L. & H., F.GS., F.C.S., &., 
OF THE BRITISH MUSEUM OF NATURAL HISTORY. 
WILFRID H. HUDLESTON, M.A., F.RB.S., Sec.G.S. 
AND 
GEORGE J. HINDE, Px.D., F.G.S., &c. 
NEW SERIES. DECADE IIt. VOL. VI. 
JANUARY—DECEMBER, 1889. 
ad ff 
LONDON: 
TRUBNER & Co., 57 ann 59, LUDGATE HILL. 
F. SAVY, 77, BOULEVART ST.-GERMAIN, PARIS. 
1889. fh 
tome 
7 
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