No. 649. 



Decade VI.— Vol. V.— No. VII. 



Price 2s. net. 



THE 



GEOLOGICAL MAGAZINE 



p-loiitlilD Joitvmil of ©eologi).^ 



WITH WHICH IS INCORPORATED ^^ »\jiJ> • 1 v5 >> M ' j 



TECE C3-E]OLOGt-IST 



EDITED BY "V, jf/j 



HENRY WOODWA.RD, LL.D., F.R.S., F.G. ' 



ASSISTED BY 



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

 SiB THOMAS H. HOLLAND, K.C.I.E., A.R.C.S., D.Sc, F.R.S., Vice-Pres. G.S. 

 Db. JOHN EDWARD MARR, M.A., Sc.D. (Camb.), F.R.S., F.G.S. 

 Sir JETHRO J. H. TEALL, M.A., Sc.D. (Camb.), LL.D., F.R.S., F.G.S. 

 Professor W. W. WATTS, Sc.D. (Camb.), M.Sc, F.R.S.-, F.G.S. 

 Dr. ARTHUR SMITH WOODWARD, F.R.S., F.L.S., Vice-Pres. Geoi,. Soc. 



JULY, 1918. 



oo3Nra?EinsrTs 



I. Original Articles. Page 

 The Leaves of Noeggerathio2}sis, 

 Australia. By Egbert Ether- 

 IDGE, jun., Director Australian 

 Museum, Sydney. With a Post- 

 script by Professor A. C. Sewaed, 

 M.A., F.R.S. , etc. (Plate XIII.) 289 



The Genesis of Tungsten Ores. By 

 R. H. Eastall, M.A., F.G.S. 

 (Continued.) 293 



The Pre-Thanetian Erosion of the 

 Chalk of the London Basin. By 

 Herbert A. Baker, B.Sc, 

 F.G.S. (With three Text-figures.) 296 



The Eock-Cliffs and Floors of the 

 "Dry" Lakes in W. Australia. 

 By J. T. JUTSON, Geological 

 Survey, Western Australia. (With 

 two Maps.) 30.5 



Notes on the genus Homalonofus. 

 By Dr. F. E. Cov\'PER Reed, 

 M.A., F.G.S. {Concluded.) ...314 



328 



8.30 



II. Notices of Memoirs. Page 

 Bibliography of the Eruptive 

 Phenomena of the Volcanoes of 

 Southern Italy. By H. J. 

 Johnston-Lavis, M.D., F.G.S., 

 etc. Edited 'by B. B. Wood- 

 ward, F.L.S., F.G.S 



III. Eeviews. 

 Dr. F. E. C. Eeed's Ordovician and 



Silurian Fossils froni Yun-nan. 

 F. W. Harmer's Glacial Geology 



of Norfolk and Suffolk 331 



J. F. Kemp's Outlook for Iron 332 



Professor A. P. Coleman's Dry 



Land in Geology 333 



IV. Eeports and Proceedings. 

 Geological Society of London 333 



V. Correspondence. 

 E.Bullen Newton, F.G.S 336 



VI. Miscellaneous. 



The Ludlow Museum 336 



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