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THE QUARTERLY JOURNAL OF TIIE GEOLOGICAL SOCIETY OF LONDON. EDITED BY THE ASS]:STANT-SEC[~ETARY OF TKE GEOLOGICAL SOCIETY. Qttod si eu~ mortalium eordi et cur~e ait non tantum inventis hmrere, atqun iis utl, sed ad ulterlor,~ penetrare ; atque aon disputalxdo adversarium, sed opere naturam vineere ; denique non belle et probabiliter opinari, sed certo et ostensive scire ; tales, tanquam veri seientiarum filii, nobis {s~ v~debitur) se adjungant --Novum Orzanum, Pr~fatio. VOLUME TItE SIXTY- F OURTH. 1908. LONDON : LONG31ANS, GREEN~ AND CO. PARIS: CHARLES KLI~NCKSIECK, 11 RUE DE LILLE. SOLD ALSO AT THE APARTMENTS OF THE SOCIETY. MDCCCCVIII. Y.. fst OF TIIE OFFIC.EItS OF TIIE (-.~ GEOLO ICAL SOCIETY OF LONDON. Elected February 21st, 1908. Prof. William Johnson Sollas, LL.D., Sc.D., I~LR.S. :Frederick William Rudler, I.S.O. 1 J. J. ttarris Teall, M.A., D.Sc.. F.R.S. Aubrey Strahan, Sc.D., F.Ir I Arthur Smith Woodward, LL.D., F.R.S. ~ctrttarie~. Prof. William Whitehe,~d Watts, So.D, I Prof. Edmund Johnston Garwood, 5i.A. ~i.Sc., F.R.S. i .~ortiCta :~ctretar12. i~rea~ur~r. Sir ArehibMd Geikie,K.C.B.,D.C.L.,LLD., I ]Io,'ace Woollaston Monekton, Treas.L.S. Sc.D., Pres.R.S. I 169169 Prof. SamuelHerbert Cox,F.C.S.,A.R.S.M. ' Frederick William R,dler, I.S.O. Prof Edmund Johnston Garwood, M.A. Prof.William Johnson Sollas,LL.D.,Se.D., Sir Archibald Geikie, K.C.B., D.C.L., F.R.S. LL.D., Se.D., Pres.R.S. Leonard James Spencer. M.A. Alfred Harker, M.A., F.R.S. Aubrey Strahau, Sc.D., F.R.S. Wilfrid H. Hudleston, M.A., F.R.S.,F.L.S. Charles :Fox Strangways. Finlay Lorimer Kitchin, ~[.A., Ph.D. J. J. Harris Teall, M.A., D.Sc., F.R.S. George William Lamplugh, F.R.S. Richard Hill Tiddeman, M,A. Richard Lydekker, B.A., F.R.S. Prof. William Whitehead Watts, Se.D,, Principal Henry Alexander Miers, M:.A., M.Sc., F.R.S. F.R.S. Heury Woods, M.A. :Horace Woollaston 5Ionckton, Treas.L.S. Arthur Smith Woodward, LL.D., F.R.S., Richard Dixon Oldham. F,L.S. Prof. Sidney ttugh Reynolds, M.A. George William Young. ~i~tant,~tcretarD, ~ltrk, r an~ IEuratar. L. L. Belinfante, M.Se. W. Rupert Jones. Clyde H. Black. A. S. ]L Dutneall. ...................... STANDING PUBLICATION COMMITTEE. Prof. ~V. J. Sollas, t'reside;;L Prof. W. W. Watts. ~ Secrelaries. Prof. E. J. Garwood. J Prof. S. H. Cox. Mr. H. W. Monckton. Sir Archibald Geikie. Mr. L. J. Spencer. Dr. F. L. Kitchin. ]Dr. A. Strahan. Mr. G. W. Lamplugh. Dr. J. J. H. Teall. Mr. R. Lydekker. Mr. 1]:. Woods. Principal H. A. Miers. Dr. A. S. Woodward. TABLE OF CONTENTS. Page .Xv~k~s, Prof. FmtxI; DawsoN. On the Structure and Relations of the Laurentian System in Eastern Canada (Plates XI-XIII) 127 :BARItOW, GEORGE. The High-Level Platforms of Bodmin Moor and their Relation to the Deposits of Stream-Tin and Wolfram (Plates XLV & XLVI) .................................. 384 t3ASEDOW, H. (& J. D. ILIFFE). On a Formation known as ' Glacial Beds of Cambrian Age ' in South Australit~ ................ 260 ]3o~.~:Y, Prof. T. G. On Antigorite and the Val Antigorio, with Notes on other Serpentines containing that Mineral ........ 152 BI~YDOyE. REGIN:tLD MAma. On the Subdivisions of the Chalk of Trimingham~ Norfolk (Plates XLVII & XLVIII) ........ 401 BuC~:.~AN, S.S. Brachiopod Homceomorphy : ' Spb'ifer glaber' .. 27 BvRu H. Notes on the l~iver Wey (Plates XXXVI & XXXVII) 318 'CLAYDEN,Principal ARTttURWILLIAM. On the Occurrence of Foot- prints in the Lower Sandstones of the Exeter District (Plate LI) 496 DALTON, LEONARD V. Notes on the Geology of Burma (Plates LIV-LVII) ........................................... 604 DEwI~:Y, ItENUY (& C. REID). The Orlon'in of the Pillow-Lava near Port Isaac in Cornwall (Plates XXVII & XXVIII) ........ 064 ELSDEN, JAMES VINCENT. The St. David's-Head ' !lock Series', Pembrokeshire (Plates XXIX-XXXII) .................... 273 EVANS, the ]ate Sir Jo~IN. Some Recent Discoveries of Paheolithie Implements ............................................ 1 GItJ~EN, JOHN IFI~EOEI~ICK NOm~tAN. The Geoloo/ical Structure of the St. David's Area, Pembrokeshire (Plate XLIV) .......... 333 GRoo:z, Dr. TttEODORE (& P. LAKE). The Ba]a and Llandovery Rocks of Glyn Ceiriog, North Wales (Plate LIII) .......... 546 a2 iv" TABLE OF CONTENTS. Page HILL, %VILLIA~L 011 a Deep Channel of Drift at Ititchin (Hert- ibrdshire) .............................................. 8 Howcm~r the Rex'. WALTER. Glacial Beds of Cambrian Age in South Australia (Plates XIX-XXVI) .................... 234 ILIFFE, J. D. (& H. B:~SEDOW). On a Formation known as ~ Glacial Beds of Cambrian Age' in South Ausmdia ................ 260 LAKE, P~ILIP (& Dr. T. T. GnOOM). The Bala and Llandovery Rocks of Glyn Ceiriog, North Wales (Plate LIII) .......... 546 LEEDS,E. THURLOW. On ~letriorlqpwl~us bracl~.yrl~nchus (Deslong.) from the Oxford Clay near Peterborough (Plates XL & XLI).. 345 LESLIE, THO~fAS NICHOLAS (& Prof. :k. C. SEVr Pernlo- Carboniferous Plants fl'om Vereeniging, Transwtal (Plates IX & X) .................................................. 109 MATLEY, Dr. CJ~AnLES ALFRED (& Dr. A. VAt'aHA~). The Car- boniferous Rocks at Loughshinny (County Dublin), with an Account of the Faunal Succession and Correlation (Plates XLIX & L) .................................................. 413 PA~KINSOX, JOJ~X. A Note on the Petrology and Physio~'raphy of Western Liberia, West Coast of Africa (Plate XXXV) ...... 313 REED, FREDERICK RICHA:RD COWPER (& Prof. S. 1I. REYNOLDS). On the Fossiliferous Rocks of the Southern IIalf of the Tort- worth Inlier ............................................ 512 REID, CLE~IENT (& H. DE'WEY). The Oria'in of the Pillow-Lava near Port Isaac in Cornwall (Plates XXVII & XXVIII) .... 261 REYNOLDS~ Profi SIDNEY HUGH. The Basic Intrusion of Buttes- tree, near Hereford (Plate LII) .......................... 501 (& F. R. C. REED). On the Fossiliferous Silurian Rocks of the Southern Half of the Tortworth Inlier .................. 512 SEWAnI), Profi ALI~ERT CHARLES. On a Collection of Fossil Plants from South Africa (Plates II-VIII) ...................... 83 ---(& T. N. LESLIE). Permo-Oarboniferons I'lants from Vereeniging, Transvaal (Plates IX & X) .................. 109 SIBLY, Dr. TEOSIAS FRa~J~LIN. The Faunal Succession in the Carboniferous Limestone {Upper Avonian) of the Midland Area [North Derbyshire and North Staffordshire] (Plate I) .. 34 SonnY, the late Dr. HENRY CLIFTON'. On the Application of Quantitative Methods to the Study of the Structure and History of Rocks (Plates XIV--XVIII') .................... 171 SeICER, the Rev. E. C. Solution-Valleys in the Glyme Area, Oxfordshire (Plates XXXVIII & XXXIX) ................ 335, TABLE OF CONTENTS. V ]"Rge THo.~Isox, JAMES AI,LAN. The. llornblendie Rocks of (~lendalong'h and Greb'stones (County \Vicklow) ........................ 475 ~,'AUG]:IAN, ])r. 2~kRTIIUR (& l)Y. C. A. MA'rL).:Y). The Carboniferous l~ocks at Loughshinny (County Dublin), with an Account of the lqmnal Succession anti Correlation (l'lates XLIX & L) .. 413 \VooDwARD, 1)r. ARTHUI~ SMITH. 01.1 some. Fossil Fishes dis- covered by 1)rof. Ennes de So~lza in the Cretaceous Formation at Ilh4os (State of Bahia), Brazil (Plates XLI[ & XLIH) .... 358 Wnt~UT, Prof. GEORG1~ FItEDERICK. Chronology of the Glacial Epoch in North America ................................ 149 WRIGHT, ~VILL1AMI]:{OURKF. The Two E,~rth-~fovements of Colons~y (Plates XXXIII & XXX]V) .................... '297 YOUNG, Dr. ALFRED PRENTICE. (-)n the Stratigraphy and Struc- ture of the T~trnthal Mt~,,s (Tyrol) ........................ 59G PROCEEDING S. Proceedings of the Meetings ............................ i, cxxvi Annual Report ...................................... ix Lists of Donors to the Library .......................... xiv List of Forei,~n Members ...... ,... ............ ,..,.... xxvi List of Foreign Correspondents ........................ xxvii List of \Vollaston Medallists .......................... xxviii List of Murchison Medallists .......................... xxx List of Lyell Medallists .............................. xxxii List of Bigsby Medallists .............................. xxxiv List of Prestwich Medallists .......................... xxxiv Applications of tlle Barlow-Jameson Fund .............. xxxv Awards of the Daniel-Pidgeon Fund .................... xxxv, cxxix ]:'inancial Report .................................... xxxvi Award of the Medals and Proceeds of Funds .............. xliii Auniversarv Address of the President .................... 1 Sl>,~cial General Meetinos ...................... cxxvii, cxxxi, cxxxii LIST OF THE FOSSILS DESCRIBED AND FIGURED IN THIS VOLUME. Name of Species. Formation. Locality. " Page EQUISETALE8. "" "~/ { Roggeveld (Fish! Schizoneurct a]Sqcana, fig. 2 I Beaufort Series l%iver) ......... i 89 sp. a, pl. iii, figs. 1 & 2 Burghersdorp I Beds ......... ] Bm'~hersdorp...i 86 sp. fl, fig. 1 ............... } StormbergBeds.! Basutoland ...... ! 86-87 FILICALES, Calli/eridium, sp., p). ix~ flg'i ~- Permo-Carboni-! 3 & text-fig. 7 ............ J 118 Cladophlebis (2bdites)"'R'~s- 1 ferous ......... [ Vereeniging ... serti, pl. viii .................. [ } Molteno Bed~ .... Indwe River ... 98 ~Da~ceopsis Hughesi , pl vi &, ] Burghersdorp fig. 5 ........................... r Beds ......... Lady Frere ...... 95-97 Ganycrmopteri,~ cucloi)teroide,% [ [ pl. x, fig. 3 ..................... I j117-18 Glossopte~is anyu.st@dia ...... ! i li6 --- vat. tceniopteroides ...... ] J nov. pl. ix rig.,, 2a a:~ text-, , ~[ K"OI,1, iilO-U~tl'OOlll-i -~ Yereemgmg - ... o '~ ,~ ' I It}POll S ......... ' rigs..'-o .......................