THE

GEOLOGICAL MAGAZINE

OR

Monthly Journal of Geology:

WITH WHICH IS INCORPORATED

"THE GEOLOGIST".

NOS. DLXXI TO DLXXXII.

EDITED BY

HENRY WOODWARD, LL.D., F.R.S., F.G.S., F.R.M.S.

LATE OF THE BRITISH MUSEUM OF NATURAL HISTORY; PRESIDENT OF THE
PALEONTOGRAPHICAL SOCIETY; ETC., ETC.

ASSISTED BY

PROFESSOR J. W. GREGORY, D.Sc., F.R.S., F.G.S.
DR. GEORGE J. HINDE, F.R.S., F.G.S.
SIR THOS. H. HOLLAND, K.C.I.E., A.R.C.S., F.R.S.
PROFESSOR W. W. WATTS, Sc.D., LL.D., M.Sc., F.R.S., V.P.G.S.
ARTHUR SMITH WOODWARD, LL.1). GLASGOW,

DULAU & CO., LTD., 37 SOHO SQUARE, W.