No. 610. 



Decade VI.— Vol. II.— No. IV. 



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THE 



GEOLOGICAL MAGAZINE 



OR 



^Hontlilj) Journal of (ieologj). 



WITH WHICH IS IN'COKPOEATED 



THE &BOLOG-IST. 



EDITED BY 



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



ASSISTED BY 



Professor J. W. GREGOEY, D.Sc, F.E.S., F.G.S. 

 Dr. GEOEGE J. HINDE, F.R.S., F.G.S. 

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

 Dr. JOHN EDWAED MAEE, M.A., Sc.D. (Camb.), F.E.S., F.G.S. 

 Dr. J. J. H. TEALL, MCA., Sc.D. (Camb.). LL.D., F.E.S., F.G.S. 

 Professor W. W. WATTS, Sc.D., M.Sc, F.E.S., Vice-Pres. Geol. Soc. 

 Dr. AETHUE SMITH- WOOD WAED, F.E.S., F.L.S., Phes./Gkqi,. Soc. 



APKIL, 1915. 



OOINTTENTS 



APR 21 -1913 



I. Original Articles. Page 

 Mounted Skeleton of Ophthalmo- 



saurus Icenicus. By C. W. 



Andrews, D.Sc, F.R.S. (Pl.V.) 145 

 Deep Bore at Seascale. By Professor 



J. W. Gregory. F.R.S., 



M.I.M.M ..146 



Fauna of Hydraulic Limestones. 



By A. E. Trtjeman, B.Sc 



(With Text-map.) ...150 



Intrusive Bock, Marston Jabet, 



Warwickshire. By Alfred 



Brammall, B.Sc., F.G.S. 



(Plate VI.) 152 



Origin of Limestone. By H.Warth 158 

 The Principle of Saturation. By 



Alexander Scott, M. A., B.Sc. 160 

 Molluscan Deposits of Wexford. 



By Alfred Bell 164 



Coniston Grit? of Windermere. 



By Rev. Canon CREWDSON, M.A. 169 



II. Reviews. 

 Geological Survey of the South 



Wales Coalfield ... ... 171 



The Water of Volcanoes 175 



Tjsef ul Minerals and Rocks 177 



Reviews (continued). Page 

 Brief Notices : The Production of 

 Mineral Waters — Portuguese 

 East Africa 179 



III. Reports and Proceedings. 

 Geological Society of London — 



February 19, 1915 180 



February 24 187 



March 10 1S8 



Geologists' Association — 



March 26, 1915 189 



Edinburgh Geological Society — 



-February 17, 1915 189 



Liverpool Geological Society — 



February 9, 1915 ..190 



IV. Correspondence. 



J. ReidMoir 191 



R. S. Newall 191 



V. Obituary. 

 Prof essor James Geikie, LL.D., etc. 192 



VI. Miscellaneous. 

 Retirement of Mr. B. H. Woodward, 



Perth, W.A 192 



Erratum 192 



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