No. 618. 



Decade VI.— Vol. II.— Ho. XII. 



Price 2s. net. 



THE 



GEOLOGICAL MAGAZINE 



^Hontliln Journal of deologij. 



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., 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., 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.), LL.D., F.R.S^-f:G7ST.T" 

 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. Geol. Soc. 



*»C 2 8 



DECEMBER, 1915. 



V 



' n 



OOXSTTZEXnTTS 



I. Original Articles. Page 



The Danbury Gravels. By Pro- 

 fessor J. W. Gregory, D.Sc, 

 F.E.S 529 



A Kevised Classification of Trilo- 

 bites. By Professor H. H. 

 Swinnerton, D.Sc, F.G.S. 

 (With 6- Text-figures.) (Con- 

 cluded.) 538 



The North-Western Begipn of 

 Charnwood Forest. By Pro- 

 fessor T. G. Bonney, Sc.D., 

 LL.D., F.E.S 545 



The Carrara, Massa, and Versilia 

 Marble District. By C. S. Du 

 Biche Preller, M.A., Ph.D., 

 F.G.S., F.E.S. E. (With 6 Text- 

 figures.) 554 



II. Eeviews. 



The Pliocene Mollusca of Great 

 Britain. By F. W. Harmer, 

 F.G.S 565 



The Sub-Crag Detritus-Bed. By 

 A. Bell 566 



Eeviews {continued). Page 

 The Extinct Sirenian Desmostylus 



hesperns, Marsh. By O. P. Hay 567 

 Herbert Bolton's Fauna of the 



Kent Coal-field 567 



Oolite from Bethlehem, Pa., U.S. 



By Edgar T. Wherry 568 



Fauna of Wewoka, Oklahoma. By 



G. H. Girty 569 



Fauna of San Pablo Group, Cali- 

 fornia. By Bruce L. Clark ...569 

 .Brachiopod Genera. By J. Allan 



Thomson 570 



Tertiary Mollusca, New Zealand. 



By Henry Suter , . 570 



III. Beports and Proceedings. 



Geological Society of Glasgow . . . 571 

 Liverpool Geological Society ... 572 

 Geological Society of London ... 573 



IV. Correspondence. 



F. N. Haward 573 



M. l'Abbe Breuil 574 



Professor S. J. Shand 575 



Bernard Hobson 576 



With this Number is presented an Extra Sheet, containing Index, Title-page, 

 etc., for Decade VI, Vol. II, 1915. 



LONDON: DULAU & CO., Ltd., 37 SOHO SQUARE, W. 



ggr The Volume for 1915 of the GEOLOGICAL MAGAZINE is ready, 

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



