633. 



Decade VI.— Vol. IV.— No. III. 



Price 2s. net. 



THE 



GEOLOGICAL MAGAZINE 



^Honthlij Journal of deglo 



WITH WHICH IS INCORPORATED 



THUE G-ZEOLOG-IST. 



EDITED BY 



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



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

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

 Sir JETHRO J. H. TEALL, M.A., Sc.D. (Camb.), LL.D., F.R.S., F.G.S. 

 Professor W. W. WATTS, Sc.D., M.Sc, F.R.S., F.G.S. 

 Dr. ARTHUR SMITH WOODWARD, F.R.S., F.L.S., Vice-Pres. Geol, Soc. 



MARCH, 1917. 



GOITTEITTS. 



I. Original Articles. Page 



A Bock Stream in East Iceland. 

 By Leonard Hawkes, M.Sc, 

 F.G.S. (Plate VI and a Text-map.) 97 



A Jurassic Fossil Fungus. By 

 David Ellis, Ph.D., D.Sc. 

 (Plate VII and a Text-figure.) . 102 



On Eugose Corals. By Professor 

 N. N. Yakovlev, Petrograd. 

 (Plate VIII and Text-figures.) . 108 



Classification of Igneous Bocks. 

 By Arthur Holmes, B.Sc, 

 F.G.S. (With Diagram and 



5 Page Tables.) 115 



II. Eeviews. 



Caledonian Thrust Movement, Nor- 

 way. ByProf.V.M.Goldschmidt. 130 



Cretaceous Brachiopoda and Mol- 

 lusea, West Africa. By E. B. 

 Newton 132 



Illinois Fossil Invertebrates 132 



Floating Fen of the Danube Delta. 

 By Marietta Pallis 133 



Geology of Northern Territory, 

 Australia 134 



Eeviews (continued). Page 



Brief Notices : Detrital Andalusite 

 in Cretaceous and Eocene Sands 

 — Fauna of the Fernando, Los 

 Angeles — American Fossil In- 

 sects — Alexandrian Eock, N.E. 

 Illinois — Glossopteris Beds, 

 Queensland — Spi/rifer from 

 Silurian, Maine 135 



III. Eeports and Proceedings. 



Liverpool Geological Society — 



January 9, 1917 137 



Geological Society of Loudon — 



January 24, 1917 138 



February 16 140 



Mineralogicai Society — 



January 16, 1917 141 



Edinburgh Geological Society — 



January 17, 1917 142 



IV. Correspondence. 



E. Bullen Newton 143 



J. B. Scrivenor 144 



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The Volume for 1916 of the GEOLOGICAL MAGAZINE is ready, 

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