THE GEOLOGICAL MAGAZINE OR Monthly Journal of Geology: WITH WHICH IS INCORPORATED "THE GEOLOGIST". NOS. DLXXI TO DLXXXII. KDITED 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 THR ASSISTED BY PROFESSOR J. W. GREGORY, D.Sc., F.R.S., F.G.S. SIR THOS. H. HOLLAND, K.C.I.E., A.R.C.S., F.R.S. DULAU & CO., LTD., 37 SOHO SQUARE, W. |