No. 641. 



Decade VI.— Vol. IV.— No. XI. 



Price 2s. net. 



THE 



GEOLOGICAL MAGAZINE 



OR 



4ftontIi.lt) Journal of (Seologn. 



WITH WHICH IS INCORPORATED 



THIE GEOLOGIST. 



HENRY 



EDITED BY 



WOODWARD. LL.D.. 



F.R.S., F.G.S., &.c. 



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. (Camb.), M.Sc, F.R.S., F.G.S. ^^— " 

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



NOVEMBER, 1917. 



OOxTTBlTTS 



I. Original Articles. Page 



Boring for Coal at Presteign, 

 Radnorshire. By T. C. Cantrill, 

 B.Sc, F.G.S. (With two Text- 

 figures.) 481 



New and imperfectly known Cre- 

 taceous Polyzoa. By R. M . 

 Brydone, F.G.S. (PI. XXXII.) 492 



The Volcanic Eruption of 1913 on 

 Ambrym Island, New Hebrides. 

 By the Rev. M. Frater 496 



The Pahang Volcanic Series. By 

 E. S. WlLLBOURN, B.A., Feder- 

 ated Malay States. (PI. XXX.) 

 {Concluded.) 503 



II. Notices of Memoirs. 



The Swiney Lectures on Geology : 

 Mineral Resources of "British 

 Empire. By Dr. J. S. Flett, 

 F.R.S 514 



A Paleocene Bat. By W. D. 

 Matthew 516 



A Llama with Four Tees. By 

 C. Martinoli 516 



The Albertella Fauna. By L. D. 

 Burling 516 



LONDON: DULAU & CO., Ltd 



III. Revie\ 

 Professor A. C. Seward : Fossil 



Plants, Vol. Ill 516 



Cambridge County Handbooks. 



C. Gore Chambers' Bedfordshire 518 



Persistent Vents of Stromboli 519 



Dr. C. Davison on the Eruption of 



Sakura-jima 520 



The Colour of Amethyst (Rose and 



Blue) Quartz 521 



Magnesite Deposits, Grenville, 



Quebec 522 



Mining in South Australia 523 



Wolfram Mines, North Queensland 524 

 The Satsop Formation of Oregon 



and Washington 524 



IV. Reports and Proceedings. 

 Edinburgh Geological Society 525 



V. Correspondence. 

 Dr. F. A. Bather, F.R.S 526 



VI. Obituary. 



Francois Cyrille Grand'Eury 528 



Professor Edward Hull 528 



George C. Crick 528 



37 SOHO SQUARE, W. 1. 



^r The Volume for 1916 of the GEOLOGICAL MAGAZINE is ready, 

 price 26s. net. Cloth Cases for Binding may be had, price Is. 6d. net. 



