THE
QUARTERLY JOURNAL
OF THE
GEOLOGICAL SOCIETY OF LONDON.
EDITED BY
THE PERMANENT SECRETARY OF THE GEOLOGICAL SOCIETY.
Quo4 si cui mortalium eordi et cur~e sit non tantum inventis h~erere, atque iis uti, sed ad ulteriora penetrate ; atque non disputando adversarium, sed opere naturam vincere; denique~non belle et probabiliter opinari, sed eerto et ostensive scire ; tales, tanquam veri seientiarum fllii, nobis (si videbitur) se adj uugant. --zYovum Organum, Pr~fatio.
VOLUME THE SEVENTY-FIRST,
FOa 1915.
LONDON : LONGMANS, GREENp AND CO. PARIS: CHARLES KLINCKSIECK, 11 RUE DE LILLE.
SOLD ALSO AT THE APARTMENTS OF THE SOCIETY. MCMXVII. OF THE OFFICERS
OF THE GEOI OGICAL SOCIETY OF LONDON.
Elected February 19th, 1915.
Arthur Smith Woodward, LL.D., F.R.S., F.L.S. ~ict~rtgi~¢nt~. Henry Howe Bemrose, J.P., Sc.D. ] Aubrey Strahan, Sc.D., LL.D., F.R.S. Clement Reid, F.R.S., F.L.S. J The Rev. Henry Hoyte Winwood, M.A. ~ttrctaritg. Herbert Henry Thomas, M.A., Sc.D. I Herbert Lapworth, D.Sc., M.Inst.O.E. ~orrign ~¢crttarp. ~rtagurrr. Sir Archibald Oeikie, O.M., K.C.B., D.C.L., [ Bedford McNeil1, kssoc.R.S.~L LL.D., Sc.D., F.R.S. I
Henry Howe Bemrose, J.P., Sc.D. John Edward Marr, M.A., Sc.D., F.R.S. Charles Gilbert Cullis, D.Sc. Edwin Tulley Newton, F.R.S. :R. Mountford Deeley, M.Inst.C.E. Robert Heron Rastall, M.A. John William Evans, D.Se., LL.B. Clement Reid, F.R.S., F.L.S. Prof. William George Fearnsides, M.A. Prof. William John son Sollas, M.A., Se.D., Sir Archibald Geikie, O.M., K.C.B., D.C.L., LL.D., F.R.S. LL.D., Sc.D., F.R.S. Aubrey Strahan, Se.D., LL.D., F.R.S. Waleot Gibson, D.Sc. J. g. Harris Teall, M.A., D.Sc., LL.D., ~Sir Thomas Henry Holland, K.C.I.E., F.R.S. D.Sc., F.R.S. Herbert Henry Thomas, M.A., Sc.D. Prof. Owen Thomas Jones, M.A., D.Sc. William Whitaker, B.A., F.R.S. Finlay Lorimer Kitehin, M.A., Ph.D. The Rev. Henry Hoyte Winwood, M.A. Herbert Lapworth, D.Sc., M.Inst.C.E. Arthur Smith Woodward, LL.D., F.R.S., Bedford McNeill, Assoc.R.S.M. F.L.S.
~[zzigtant--~tcretarp, ~ibrarian, ard~ CItrtk. L. L. Belinfant~, M.Sc. ~ ~i~tant-l[ibraxian. ~t~i~tant--~Itrlk. C. P. Chatwin. M. St. John Hope. ~gi~tant ill ]Lfbrar~ anl~ @flier. Arthur Oreig.
STANDING PUBLICATION COMMITTEE. Dr. A. Smith Woodward, President. Dr. H. Lapwortb, Dr. Herbert H. Thomas, ~ Secretaries. Dr. F. A. Bather. Mr. Bedford McNeill. Dr. H. H. Bemrose. Dr. J. E. Marr. Dr. C. G. Cullis. Mr. E. T. Newton. Dr. J.W. Evans. Prof. W. J. Sollas. Prof. W. G. ~earnsides. Dr. A. Strahan. Dr. Walcot Gibson. Dr. J. J. H. Teall. Prof. 0. T. Jones. TABLE OF CONTENTS.
Page AND]roSeN, ERNEST MASSON (& E. G. RADL]~Y). The Pitchstones of Mull and their Genesis ...... 205
BAILRY, EDWARD BATTERSBY (~ H. TT. T~o~As). Notes on the Rock-Species Leidleite and Inninmorite ...... 207, 209
BOSWELL, PERCY G~;oRo]~ HAMNALL. Tire Stratigraphy and Petrology of the Lower Eocene Deposits bf the Noi~th-Eastern Part of the London Basin. (Plates XLVL-LI) ...... 536
COL~, GRENVILT.~ A.J. A Composite Gneiss near Barna (County Galway) ...... 183
COX, A.RTHUR HUBERT. The Geology. of the District between Abereiddy and Abercastle, Pembrokeshire. (Plates XXII- XXVI) ' 273
DAwsoN, CHARLES (& A. S. WOO1)W~L1tD). On a Bone Implement from Piltdown~ Sussex. (Plate XIV) ...... , ...... 144
DON, ARCHIBALD WILLIAM ROBWaTSON (& G. HICKLIN6). On 9Parka dedpiens. (Plates LIV-LVI) ...... 648
~UNLOP,ANDR]~W. On a Raised Beach on the Southern Coast of Jersey ...... ; ...... 150
HICXLING, GRORGn (& A. W. R. DON). On Par~&dp~. (Plates LIV-LVI) ...... 648 iLLING, VINCENT CHARL]$S. The Paradoxidian Fauna of a Part of the Stockingford Shales. (Plates XXVIII-XXXXrIII) ...... 386
JONES, OWEN THOMAS (& W. J. Pueff). The Geology of the District around Machynlleth and the Llyfnant Valley. (Plate XXVII) ...... 343 a '~ iV TABLE OF CONTEI~;I"8. Page K]gNNARD,ALFRED SANTER (& B. B. ~rOODWARD). Notes on the Mollusca [Lea Valley Deposits] ...... 179
MARR, JOHN EDWARD. The Ashgillian Succession in the Tract to the West of Coniston Lake ...... 189
MRNNELL, FREDERIC PHILIP. The Rocks of the Lyd Valley, above Lydford, Dartmoor. (Plate LII) ...... 623
NICHOLAS.TRESSILIAN CHARLES The Geology of the St. Tudwal's Peninsula, Carnarvonshire. (Plates IX-XIII) ...... 83
Notes on the Trilobite Fauna of the Middle Cambrian of the St. Tudwal's Peninsula, Carnarvonshire. (Plate XXXIX) .... 451
PARIS, E. TALBOT (& L. RICKA~RDSON). Sonde Inferior-Oolite Pectini&e. (Plates XLIV & XLV) ...... 521
PUOH, WILLIAM JOHN (& O. T. JON~S). The Geology of the District around Machynlleth and the Llyfnant Valley. (Plate XXVII) ...... 343
RADLEY, ERNEST GEORGI~ (& E. M. ANDERSON). The Pitchstones of Mull and their Genesis ...... 206
RASTALL, ROBERT HERON (.& W.H.WILCOCKSON). The Accessory Minerals of the Granitic Rocks of the English Lake District .. 592
REID, CLEMENT. The Plants of the Late Glacial Deposits of the Lea Valley. (Plate XV) ...... 155
RICHARDSON, LINSDALL. The Inferior Oolite and Contiguous De~oaits of the Doulting-Milborne-Port 'District, Somerset. (Plates XL-XLIII) ...... 473
-- (& E. T. PARIS). Some Inferior-Oolite Pectini&e. (Plates XLIV & XLV) ...... 521
SMITH, STANLEY. The Genus Zonsdaleia and Dibunophyllum rugosum (McCoy). (Plates XVII-XXI) ...... 218
ST~LNIER, XAVIER. On a New Eurypterid from the Belgian Coal- Measures. (Plate LHI ) ...... 639
TRECHMANN, CHARLES TAYLOR. The Scandinavian Drift of the Durham Coast and the General Glaciology Of South-East Durham. (Plale VIII) ...... 53
VAUGHAN, ARTHUI~. Correlation of Dinantian and Avonian. (Plates I- VII) ...... 1 TABLE OF CONTENTS, 9
Page WARREN, SAMUEL HAZZLEDINE. Further Observations on the Late Glacial, or Ponder's End, Stage of the Lea Valley. (Plate XVI) 164
"~VILCOCKSON, WILLIAM HOWSON (& R. H. RASTALL). The Accessory Minerals of the Granitic Rocks of the English Lake District ...... 59"2
WOODWARD, ARTHUR SMITH (~ (~. DAWSON). On a Bone Imple- ment from Piltdown, Sussex. (Plate XIV) ...... 144
WOODWARD, BRRN~aD BARHAM (& A. S. KEN~ARD). Notes on the Mollusca [Lea Valley Deposits] 179
PROCEEDINGS. Proceedings of the' Meetings ...... i, lxxvi Annual Report ...... ix Lists of Donors to the Library ...... xiii List of Foreign Members ...... xxiv List of Foreign Correspondents ...... xxv List of Wollaston Medallists xxvi List of Murchison Medallists ...... xxviii List of Lyell Medallists ...... xxx Lists Of Bigsby and Prestwich Yedallists ...... xxxii Applications of the Barlow-Jameson Fund and Awards from the Daniel=Pidgeon Fund ...... xxxiii Financial Report xxxiv Awardaof the Medals and Proceeds of Funds ...... xlil Anniversary Address of the President ...... liii Special General Meetin~ lxxvii
FIELD,ALEC. EAnnouncement of decease] ...... lxxviii HILL, WILLIAM. [Announcement of decease] ...... ii LYD]~KKER, RICHARD. [Announcement of decease~ ...... lxxix PETRIE, W. M. FLINDERS. On the Pal~ozoic Age and its Climate in Egypt ...... fii LIST OF THE FOSSILS FIGURED AND DESCRIBED IN THIS VOLUME.
Namo of Bpoeiee. Formation. [ LoeaLity. [Page
ZO~IIAaIA.
Uaninia comueopie, pl. iv, i Feluy-
~g. 8a9 ...... Arquennes ... 36 eyli~driea, pl. iii, fig. 5 (38 ---, mut. hast/er/ens/s pl. iii, fig. 2 ...... 37 Carboniferous --- rout. 7, pl. iii, Limestone ... I ~g. 4 +~176...... ,. { Belgium ...... 38 rout. K, pl. iii, fig. 1 ...... 37 - - rout. Z, pl. iii, [ I fig. 3 & pl. iv, fig. 11 ...... ) 38 # Landelies Lime- doe/odoti, pl. iv, fig. 10 .[ t Ampsin ...... 36 stone ......
pl. v, figs. 1 a & I b ...... II Avoenoe ...... 38 Various 257 .... ~e~u/are ...... I I Carboniferous ~b~/~ophyllum ~9'o~, pl.it Limestone ... xxi, figs. [I--16 ...... Various ...... 264-68 0, pl. v, fig. 4 ...... MMlieue ...... 4O sp., pl. v, fig. Vis6 ...... 41 Iamdelies Lime- mieulare, pl. v, fig. 3 ...... stone ...... Laadelies ...... 39 tran~itorium, see Uanin~ r mut. K. Lit~ostrotio~ astroides, pl. xxi, fig. 2 ...... Pinega ...... 259 eraarciatum, pl. xxi, fig. 1. Boroviehi ...... 257 mammillare ...... Priksha ...... 258 I~,~laleia bron~i ...... Various ...... 256 Carboniferous :caledonia, sp. nov., pl. Limestone ... xviii, figs. 11-13 ...... Various ...... 245 cTa~/vo~u~, see L. flor/- f~mis ...... Various ...... 260 duplieata alstonen~d~, pl. xvii, figs. 5-24 ...... Alston ...... 241 FO88IL$ FIOURBD AND Dm~JglBWD. , vii
Name of Speeies. Formation. I Locality. [Page
ZOA~rHAmA (continued). Lonsda/e/a d~g/~z~ du/g/- Carboniferous ~ta, pl. xvii, figs. 1-4 ...... Limestone ... Various ...... 238 melmerb/en~, pl. Melmerby Scar xviii, figs. 2 & 3 ...... Limestone ,.. Melmerby ...I.. 242 ~r ~ass/e, om~, f pl. xx, figs. 3--10 ...... Various . ~3 floriformis, pl. xix, rigs. 1-5 ...... Various ...... 247 ~ laticlavia, pl. xix, figs. 9-12 & pl. xx, rigs. 1-2. Various ...... 251 pramunt/a, sp. nov., pl. xvii, riga 25-28 ...... Arnside ...... 243
figs.~lyli~ sp.].?.~..v:].pl.:..~..'!i: M0nsal Dale .,. 244
Derbyshire ...... 261 8trotwbodes Co~a~S, see L(ms. Carboniferous Derbyshire ...... 259 da~ florif or~is.~orifoemis. Limestone .., wenZockensis, see Lons- dalia./~rOrormis latidavia.. Unknown ...... 262 8yringopora favositoides, sp. nov., pl. v, figs. 2 a 9 2 b... Avesnes ...... 34 9Thysa~urphyUum pseu~ver -~ gnioulare, pl. xvii, figs. 29 & 30 ...... I Kendal ...... 269 Zaphrentis delaz~uei, mat. parallels, pl. iv, figs. 1 & 2. Pont-4-Rieux ... 34 dd~pini, sp. nov.,pl, iv, Feluy- figs. 3-4 b, 5, 6 ...... Arquennes .. 34 ~q. hani, pl. iv, fig. 7* 9 Gourna R. (CountyClare 35
~I~RILOB [TA. ' Stoekingford t Hartshill & Agnostus altus, pl. xxx, rigs. 9 Shales & St. Tudwai's & 10 ...... Nant~pig Peninsula ... 412, 457 Mudstones ... ba,./owi, var. sp/,w~us, ( nov., pL xxx, figs. 11 & !2 . 413 . barra~.ei, pl. xxx, figs. 13 I Stockingford ~{ I~rt~hill ...... 413 & 14 ...... Shales ...... 9, bibulla~us, pl. xxxi, rig. 1 413 -bi/urca, tu~, s p. nov., pI. xxxiii, rigs. 2 a--Bb ...... ~421 Upper Caered 9St. Tudwal's cambre~ ...... Mudstones .... Peninsula ... 458 corrugatus, sp. nov., pl. Stookingford xxix, figs< 4-9 ...... Shales ...... Hartshill ...... 4O9 Upper Oaered St. Tudwal's ~r/d/s ...... Mudstoneg .. Peninsula .. 456 ' Stockingford Hartshill & ~aratus, pl. xxviii, fig. l Shales & St. Tudwal's Nant~pig Peninsula .. 405, 456. Mudstones ...