No. 698. 



Vol. LIX of Whole Series. 



Price 2s. 6d. 



The 



Geological Magazine 



riDontbh^ 3ournal of (Beoloijv. 



WITH WHICH IS INCORPORATED 



THE GEOLOGIST. 

 Founded in 1864, by the late Dr. Henry Woodward, F.R.S. 



Editor 



R. H. RASTALL, Sc.D., M.Inst.M.M. 



4SSI8TED BV 



Prof. J. W. GREGORY. D.Sc. F.R.S. 

 r. H. H.'VTCH, Ph.D., M.Inst.M.M. 

 Sir T. H. HOLLAND, K.C.S.I., F.R.S. 

 Prof. J. E. MARR, Sc.D., F.R.S. 



Sir JETHRO J. H. TEALL, Sc.D., F.R. 

 Prof. \V. \V. WATTS, Sc.D., F.R.S. 

 HENRY WOODS, M.A., F.R.S. 

 A. SMITH WOODWARD, LL.D., F.R.S. 



;^,*» 



Miait io« 



^% 



AUGUST, 102>S. '^ 



kHHIfi g n 1922 * 



CONTENTS :— 



Page 

 Editorial Notes 337 



Original Articles. 



Wegener's Displacement Theory. 

 By P. Lake 338 



The Nomenclature of the Spilitic 

 Suite. By A. K. Wells 346 



A Boring near Cricklade. By L. 

 ElCHARDSON 354 



Vivianite in a Fireclay. By J. 

 Stansfield. (With Plate XVI.) 356 



The Llwydmor Bach Granophyre. 

 By A. Heard 358 



A New Brachiopod from Estonia. 

 By H. Bekker. (With 5 Text- 

 figs.) 361 



Page 



A Pleistocene*©^p68ti^airCTevedon . 

 By Dr. E. Greenly. (With 

 4 Figs.) 365 



Reviews. 



Progressive Metamorphism 377 



Geology on the Western Front ... 378 



Eocene Mollusca from Nigeria 379 



Arctic Basalts 380 



Reports and Proceedings. 



Geologists' Association 381 



Mineralogical Society 382 



Correspondence. 



L. D. Stamp 383 



Announcements and Inquiries. 

 Alfred Bell 384 



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 Cavendish Square, W. 1. 



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