Hi 



o. 565. 



Decade V.— Voi. VIII.— No. VII. 



Price 2s. net. 



THE 



GEOLOGICAL MAGAZINE 



^ttonthhj Journal of (leologn. 



NVITH WHICH IS INCORPORA'IKI) 



THE G-EOLOG-IST. 



EDITED BY 



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



ASSISTED BY 



Professor J. VV. GREGORY, D.Sc, F.R.S., F.G.S. 



Dr. GEORGE J. IIINDE, F.R.S.. F.G.S. 



Mi; THOMAS H.HOLLAND, K.C.I.E , A.R.C.S., D.Sc., F.R.S., F,G.S. 



Professor W. AV. WATTS, Sc.D., M.Sc, F.R.S., Pres. Geol. Soc. 



Hi:. ARTHUR SMITH WOODWARD, F.R.S., F.L.S., SEC.GEor,.Soc, and 



HORACE B. WOODWARD, F.R.S., F.G.S. 



JULY, 1911. 



CONTENTS 



I. Original Articles. Page 



The Fundamental Problems of 

 Pedogenesis , or Origin of the 

 Igneous Rocks. By Professor 

 Dr. Franz Lcewinson-Lessing. 

 (Concluded.) 289 



A new Genus of Fossil Plants from 

 the Stormberg Series of Cape 

 Colony. By Prof. A. C. Seward, 

 M.A., F.E.S. (Plate XIV.) ...298 



Beds of Yellow Sands and Marl 

 in the Magnesian Limestone 

 of Durham. By B. Cooksey 

 Burton, B.Sc. (With four Text- 

 figures.) 299 



A new Species of Eryon from the 

 Upper Lias, Dumbleton Hill. 

 By Henry Woodward, LL.D., 

 F.R.S. (With two Text-figures.) 307 



II. Reviews. 

 Dr. Albert Brim's New Vulcanology. 



[Concluded.) 311 



The Building of the British Isles. 



By A. J. Jukes-Browne, B.A., 



F.R.S 316 



The Genus Caninia. By Dr. A. 



Salee 320 



British and Foreign Building Stones . 



By John Watson 322 



Movements of Subsoil Water in ' 



Egypt. By H. T. Ferrar, M.A., 



F.G.S 323 



Reviews (continued). Page 



New Zealand Geological Survey ... 324 

 Brief Notices : Pre- Cambrian Rocks, 

 Alberta — Cambrian Fauna, North 

 America — Iowa Geological Survey 325 



III. Reports and Proceedings. 



Geological Society of London — 



April 26, 1911 325 



May 10 328 



May 24 331 



Zoological Society — 



May 23, 1911 



IV. Correspondence. 



R. M. Deeley, F.G.S 



Dr. J. J. H. Teall, F.R.S. ... 

 Dr. J. W. Evans, F.G.S. ... 

 G. W. Tyrrell, F.G.S 



Rev. R 

 F.R.S.E. 



Vernon Austin 



V. Obituary. 

 Boog Watson, B.A. 



331 



332 

 334 

 334 

 335 



336 

 336 



VI. Miscellaneous. 



Mr. H. H. Thomas, M.A., B.Sc, 

 appointed Petrographer to the 

 Survey 336 



Footprints in the Permian at 

 Poltimore, Devon 336 



LONDON : DULAU & CO., Ltd., 



SOHO SQUARE, W. 



Bgir The Volume for 1910 of the GEOLOGICAL MAGAZINE is ready, 

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



