593. 



Decade V.— Vol. X.— No. XI. 



Price 2s. net 



THE 



GEOLOGICAL MAGAZINE 



OR 



^Tontlilij Jaurnal of ©eologu. 



■WITH WHICH IS INCORPORATKI) 



THE! G-EOLOG-IST. 



EDITED KY 



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



ASSISTED BY 



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



Dr. GEORGK J. HINDI-:, F.R.S.. F.G.S. 



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



Professor "W. "W. \YATTS, Sc.D., M.Sc, F.R.S., Vice-Prks. Geol. Soc. 



Dr. author smith WOODWARD, F.R.S., F.L.S., Sec. Geo i,. Soc. 



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



NOVEMBER, 1913. 



OOnSTTEHSTTS 



I. Original Articles. Page 



On the Semi-Arid Conditions in 

 Soutli-West Texas. By T. 0.' 

 BoswoETH, D.Sc, B.A., F.G.S. 

 (Plates XVI and XVII.) 



The Twelfth International Geo- 

 logical Congress. ByB.HOBSON, 

 M.Sc, F.G.S. 



On the Important Part played by 

 Calcareous Algse at certain Geo- 

 logical Horizons, with Special 

 Reference to the Palaeozoic Socks. 

 By Professor E. J. GARWOOD, 

 M.A., V.P.G.S. {Continued.). 



The Plutonic Eocks of Garabal 

 Hill. By B. K. N. Wyllie, 

 M.A., B.Sc, and Alexander 

 Scott, M.A., B.Sc. 

 Text-figures.) 



On Saturated and 

 Igneous Rocks. 

 S. J. Shand, D.Sc, Ph.D., F.G.S. 



Septaria : a Defence of the 

 ' Shrinkage ' view. By T. Crook^ 

 A.E.C.Sc, F.G.S. 



481 



486 



490 



(With two 



Unsaturated 

 5y Professor 



499 



508 



514 



II. Notices of Mebioirs. Page 



British Association : Abstracts of 

 Papers read in the Geological 



Section 



516 



III. Reviews. 



Geology of the New'ton Abbot 

 District. By W. A. E. Ussher 

 and others 524 



Geology and Forestry . .^___iii___.^,_526 

 Annual Report of -the/'Jgfitii^Jjio^/r'^ 



Museum ... .^. ...... ... &27v 



United States G^logical Survey 



(Wate,.Supp,j) ...^..^^.^.^^ 



IV. MigCELLANEOUS. ■ 



Dr.F. H. Hatch, F.G^S:./;/Preside5^trjse^ 

 elect of Institution ofmi^^-aiOT^'^ 

 Metallurgy 528 



Dr. T. F. Sibly, F.G.S., transferred 

 to Cardiff from King's College ... 528 



Mr. T. Sheppard, F.G.S., President- 

 elect of Yorkshire Naturalists' 

 Union 528 



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The Volume for 1912 of the GEOLOGICAL MAGAZINE is ready. 

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