1tfo. 657. 



Decade VI.— Vol. VI.— No. III. 



Price 2s. 



The 



Geological Magazine 



fli>ontbl\> Journal of <Seoloo\\ 



WITH WHICH IS INCORPORATED 



THE GEOLOGI- &^ 9tSb k " 1 ' 



EDITED BY 



HENEY WOODWAED, LL.D 



AND 



E. H. EASTALL, M.A., F.G 



ASSISTICO BY 



Prof. J. W. GREGORY, D.Sc, F.R.S. | Sib JETHRO J. H. TEALL, Sc.B., F.R.S. 



SirT. H. HOLLAND, K.C.I.E., D.Sc., F.R.S. I Pbof. W. W. WATTS, Sc.D., F.R.S. 

 PBOF. J. E. MARE, Sc.D.,. F.R.S. De. A. SMITH WOODWARD, F.R.S. 



;.OAR24l919 



<I'on 



MARCH, 1919. 



CONTENTS :— 



Page 

 Editorial Notes. 97 



Original Articles. 

 Fossil Fishes in the Devonian Rocks 



of North Devon. By Inkermann 



Rogers; with Notes by A.Smith 



Woodward, LL.D., F.R.S 100 



The Facial Suture of Trilobites. 



By Prof. H. H. Swinnerton, 



D.Sc, F.G.S ... 103 



Notes on Yunnan Cystidea. Part III. 



Bv F. A. Bather, D.Sc, F.R.S. 



(Plate III.) 110 



Notes on Ammonites. III. By 



L. F. Spath, B.Sc, F.G.S 115 I 



Pleochroism in a Tin-bearing 



Mineral from Siam. By J. B. 



Scrtvenor, M.A., F.G.S 123 



Note on the High-level Deposits on 



the Chalk at Little Heath, near 



Berkhamsted. By Reginald A. 



Smith, F.S.A 124 



Some Recent American Penological 



Literature 125 



Reviews. Page 



La Face de la Terre, Tome III, 



Partie 4 (fin) 128 



Diamonds in South Africa ~130 



Geomorphology of Wellington, N.Z. 130 . 

 Tertiary Beds of Pareora, N.Z. ... 131 

 The Alpine Chain of Otago, N.Z... 131 

 The Geology of the Tubnai Islands 



and Pitcairn 131 



Building Stones of Queensland ... 132 



Clays of Saskatchewan 132 



Archaean Granites of Sweden 132 



Swedish Archaean Structures 133 



Department of Mines, Canada, 



Report 133 



Reports and Proceedings. 



Geological Society of London 133 



Edinburgh Geological Society 141 



Mineralogical Society 143 



Correspondence. 

 Dr. F. A. Bather 143 



Obituary. . 



H.C.Drake 144 



C. R. Van Hise 144 



LONDON : DULAU & CO., Ltd., 34-36 Margaret Street, 

 Cavendish Square, W. 1. 



Subscriptions (24s. net) for 1919 are now due; please remit as early as possible to 

 avoid delay in the despatch, of the next number. Cloth Cases for Bindine mav be 



