No. 611. 



Decade VI.— Vol. II.— No. V. 



Price 2s. net. 



THE 



GEOLOGICAL MAGAZINE 



OR 



^ftonthlij Journal of (leologj). 



WITH WHICH IS INCORPORATED 



THE GEOLOGIST. 



EDITED BY 



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



F.G.S. 



&.C. 



ASSISTED BY 



Professor J. W. GREGORY, D.Sc., F.R.S. , P.G.S. 

 Dr. GEORGE J. HINDE, F.R.S., F.G.S. 

 Sie THOMAS H. HOLLAND, K.C.I E., A.R.C.S., D.Sc, F.R.S , F.G.S. 

 Dr. JOHN EDWARD MARR, M.A., Sc.D. (Camb.), F.R.S., F.G.S. 

 Dr. J. J. H. TEALL, M.A., Sc.D. (Camb.), LEX., F.R.S., F.G.S. 

 Professor W. W. WATTS, Sc.D., M.Sc, F.R.S., Vice-Pres. Geol. Soc. 

 Dr. ARTHUR SMITH WOODWARD, F.R.S., F.L.S., Pres. Geod. Soc. 



MAY, 1915. 



GOlsTTEHSr 



I. Original Articles. Page 



Eminent Living Geologists : Aubrey 

 Strahan, M.A., Sc.D. (Camb.), 

 F .E . S . , Director of the Geological 

 Survey. (With a Portrait, 

 Plate VII.) 193 



Differential Movement in East 

 Anglia in Tertiary Times. By 

 P. G. H. Boswell, B.Sc, 

 D.I.C., F.G.S. (With 3 Text- 

 figures.) 198 



Tektite from British Borneo. By 

 Dr. F. P. Mueller (Basle). 

 (With Text-map and Diagram.) 206 



Studies in Edrioasteroidea. By 

 F. A. Bather, M.A., D.Sc, 

 F.E.S. ... 211 



The Zonal Lake Basins of sub- 

 Alpine Switzerland. ByC. S. Du 

 Riche Preller, M.A., Ph.D., 

 M.I.E.E., F.G.S., F.E.S. E. 

 (With 4 Page-maps and Sections.) . 215 



The Genesis of Chiastolite. By 

 Alfred Brammall, B.Sc, 

 F.G.S. (Plate VIII.) 224 



Original Ar' 



The Petrology of NoTUvWestern 

 Angola. By ARTHUR HOLMES, 

 ^B.Sc,A.R,C.S.,F.G.S.,F.R.G.S. 

 (With a Map, Plate TX.) 228 



II. Eeviews. 

 Memoirs of the Geological Survey : 

 AVindsor and Chertsey 232 



III. Reports and Proceedings. 

 Geological Society of London — 



March 24, 1915 234 



Mineralogical Society — 



March 16 ... 236 



Geological Society, Glasgow — 



April 8 236 



Liverpool Geological Society — 



April 13 237 



IV. Correspondence. 

 Chas. E. P. Brooks 



V. Obituary. 

 Richard Lydekker, B.A. (Camb.) 

 F.R.S., F.G.S., F.Z.S 



238 



238 



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