No. 445. New Series. — Decade IV. 



-Vol.VIII.— No. VII. Price Is.Gd. nett. 



THE 



GEOLOGICAL MAGAZINE 



OH, 



c^lonthli) Jouiinal of ffieologg. 



WITH WHICH IS INCOKPORATKD 



"THE GKOLOaiST." 



EDITED BY 



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



ASSISTED BY 



ROBERT ETHERIDGE, F.R.S. L. & E., F.G.S., &c., 



WILFRID H. HUDLESTON, M.A., F.R.S., F.L.S., F.G.S., Soc, 



GEORGE J. HINDE, Ph.D., F.R.S. , F.G.S., &,c., AND 



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



JULY, 1901. 



OOISTTEnSTTS, 



I. Original Articles. page 



1. Eminent Living Geologists : 

 Professor 0. Lapworth, LL.D., 

 F.R.S., F.G.S. (With a Por- 

 trait, Plate V.) 289 



2. A Systematic Nomenclature for 

 Igneous Rocks. ByH. S. Jevons, 

 M.A., F.G.S 304 



3. Notes on the Tourmaline of the 

 "White Granite of Dartmoor. By 

 Lieut -Gen. C. A. McMahon, 

 F.E.S., F.G.S. 316 



•1. Abnormal Section of Chloritic 

 Marl at Mupe Bay, Dorset. By 

 A. Strahan, M.A., F.G.S. ... 319 



II. Notices or Memoirs. 



1 . Origin of the Ancient Crystalline 

 Hocks. By Prof. F. D. Adams, 

 Ph.D., F.G.S., etc 321 



2. Nodular Granite from Pine Lake, 

 Ontario. By Prof. F. D. Adams 322 



3. Experimental Investigation into 

 the Flow of Marble. By Prof. 



F. D. Adams & J. T. NicoLson 322 



4. Geology of West Cornwall. By 



J. B. iiill 323 



Notices of Memoirs — continued. page 



5. Argonaut from the Tertiary of 

 Japan. By Mr. Yoshiwara ... 323 



6. Tlie Grand Canyon of the 

 Colorado. By Prof . W. M. Davis 324 

 Shorter Geological Notes 324 



7 



III 

 1 



Reviews. 



The Mineralogy of Scotland. By 



the late M. F. Heddle, M.D., 



F.R S.E 



Homoeoniorphy among Jurassic 

 Brachiopoda. By S. S. Buckinan, 

 F.G.S 



325 



326 



IV. Eeports and Proceedings. 



Geological Society of Loudon — 



1. May 8, 1901 : 327 



2. May 22, 1901 329 



V. Correspondence. 



1. A. M. Davics, B.Sc, F.G.S. ... 331 



2. Professor T. G. Bouuey, D.Sc, 

 F.R.S 332 



3. J. R. Dakyus, Esq 332 



VI. Obituary. 



Professor Gustaf Liudstrbm. 

 (With a Portrait, Plate XIII.) 333 



LONDON: DULAU & CO., 37, SOHO St^ARE. 



iiT The Volume for 1900 of the GEOLOGICAL MAGAZINE is ready, 

 price 20s. nett. Cloth Cases for Binding may be had, price Is. 6d. nett. 



