No. 662. 



Decade VI— Vol. VI.— No. VIII. 



Price 2s. 



Th« 



Geological Magazine 



flDontbl\> 3oumal of <5eoloo\>. 



WITH WHICH IS INXOKPORATED 



j ii i an inst/7/S 

 THE GEOLOGIST, 



EDITED BY U ' J *) 1 9 1 9 



HENRY WOODWARD, LL.D., F.R.S. xy 



''onal Mus^ 



AND ^*^~--_ ___ 



R. H. RASTALL, M.A. 



ASSISTED BY 



Prof. J. W. GREGORY, D.Sc, F.R.S. | Prof. Wi W. WATTS, Sc.D., F.R.S. 



Prof. J. E. MARK, Sc.D., F.R.S. HENRY WOODS, M.A., F.R.S. 



Sir JETHRO J. H. TEALL, Sc.D., F.R.S. Dr. A. SMITH WOODWARD, F.R.S. 



AUGUST, 1919. 



CONTENTS :— 



Page 

 Editorial Notes 337 



Original Articles. 



Non-German Sources of Potash 



(concluded). By Dr. A. HOLMES . 340 

 The Igneous Bocks of the Ash- 



prington Area. By Miss I. H. 



Lowe 350 



Dr. C. D. Walcott's Besearches on 



the Appendages of Trilobites. 



(Plate VIII.) By Dr. W. T. 



Calman 359 



The Two Magmas of Strathbogie. 



ByH. H. Bead 364 



Brachiopod Nomenclature Spirifer 



and Syringothyris. By Dr. J. 



Allan Thomson 371 



Beviews. Page 



Novitates Paleeozoicse 374 



Mesozoic Insects of Queensland ... 377 

 Permian and Triassic Insects from 



New South Wales 377 



Iron Ores of Scandinavia 378 



Geology of Hororo, Papua 379 



Beports and Proceedings. 



Geological Society of London 379 



Mineralogical Society 382 



Geologists' Association 384 



Correspondence. 

 F. Barke 384 



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