THE Nos. 393-94 QUARTERLY JOURNAL OF THE GEOLOGICAL SOCIETY OF LONDON EDITED BY THE ASSISTANT SECRETARY VOLUME XCIX, PARTS I & 2 (ISSUED ~9 AUGUST ~943) LONDON : LONGMANS, GREEN & CO. LTD. 43 ALBERT DRIVE, S.W.I9 SOLD ALSO AT THE APARTMENTS OF THE SOCIETY BURLINGTON HOUSE~ PICCADILLY~ W.I Price Seven Shillings and Sixpence
GEOLOGICAL SOCIETY OF LONDON LIST OF THE OFFICERS AND COUNCIL Elected 17 March, 1943 PRESIDENT Prof. William George Fearnsides, M.A.F.R.S. VICE-PRESIDENTS Tom Eastwood, A.R.C.S.M.Inst.M.M. Prof. Herbert Harold Read, D.Sc. Prof. Herbert Leader Hawkins, D.Sc. A.R.C.S.F.R.S.F.R.S.E. F.R.S. Prof. Arthur Elijah Trueman, D.Sc. F.R.S.M.I.Min.E. SECRETARIES Wilfred Norman Edwards, B.A. / David Williams, ] Assoc.Inst.M.M. Ph.D. M.Sc. B.E. FOREIGN SECRETARY Sir Thomas Henry Holland, K.C.S.I.K.C.I.E.D.Sc. LL.D.F.R.S. TREASURER Frederick Noel Ashcroft, M.A., F.C.S. COUNCIL Frederick Noel Asheroft, M.A.F.C.S. Frederick John North, D.Se. Alfred Joseph Bull, M.Sc. Ph.D.F.R.G.S. James Phemister, M.A.D.Se. F.R.S.E. Oliver Meredith Boone Bulman, Se.D. Prof. Herbert Harold Read, D.Sc. Ph.D.A.R.C.S.D.I.C.F.R.S. A.R.C.S.F.R.S.F.R.S.E. Leslie Reginald Cox, M.A. Se.D. Major Kenneth Stuart Sandford, T.D. Tom Eastwood, A.R.C.S.M.Inst.M.M. M.A.D.Se. D.Phil. Wilfred Norman Edwards, B.A. Leonard James Spencer, C.B.E.M.A. Percy Evans, B.A. Se.D.F.R.S.F.C.S. Prof. William George Fearnsides, M.A. Cyril James Stubblefield, Ph.D.B.Sc. F.R.S. D.I.C.A.R.C.S. Arthur Francis Hallimond, M.A. Sc.D. Prof. Arthur Elijah Trueman, D.Sc. Sir Lewis Leigh Fermor, O.B.E.D.Sc. F.R.S.M.I.Min.E. F.R.S.A.R.S.M.M.Inst.M.M. Henry Cherry Versey, D.Se. Prof.HerbertLeaderHawkins,D.Sc.F.R.S. Prof. Walter Frederick Whittard, D.Sc. Sir Thomas Henry Holland, K.C.S.I. Ph.D.A.R.C.S.D.I.C. K.C.I.E.D.Sc. LL.D.F.R.S. David Williams, Ph.D. M.Sc. B.E. Prof. Herbert Price Lewis, M.A. Sc.D. Assoc.Inst.M.M. ASSISTANT SECRETARY AND EDITOR Arthur Greig LIBRARIAN CLERK Miss E. D. Eastwood, F.L.A. Miss N. P. Morris ASSISTANT LIBRARIAN Miss A. Barber ASSISTANT IN THE LIBRARY Mrs. G. H. Barker, M.Sc. STANDING PUBLICATION CO1VI1VIITTEE Prof. W. G. Fearnsides, President Mr. W. N. Edwards) Dr. D. Williams S Secretaries Sir T. Holland, Foreign Secretary Mr. F. N. Ashcroft, Treasurer Mr. T. Eastwood Major K. S. Sandford Mr. P. Evans Dr. L. J. Spencer Dr. A. F. Hallimond Dr. C. J. Stubblefield ProL H. H. Read Prof. W. F. Whittard.
DISCUSSION ON PAPERS IN THE QWR~'ERLr JOVRN~L The Council announces that the pages of the Quarterly Journal are open to the discussion of papers which have already appeared in the Journal. While every Fellow may contribute to these discussions, they are intended primarily for the benefit of Fellows (and particularly those resident overseas) who are unable to attend the meetings of the Society, and to afford such Fellows a closer contact with the Society's activities. Fellows are requested to comply with the following regulations when submitting their contributions to these discussions, since it will not be possible for the Secretaries to enter into correspondence about them or to submit proofs to the contributors. a. Notice will be given in each part of the Journal (normally below the table of contents on the back page of the cover) of the latest date by which discussion of papers in that part will be accepted for consideration. The date selected will be such that all overseas Fellows will have reasonable time to contribute to the discussion. b. Contributions to these discussions should not as a rule exceed 250 words (half a page of the Journal), and they will be subject to editing by the Secretaries. They should be typewritten, and the title of the paper discussed, and the name of its author, appear plainly at the top of the typescript. c. Discussion of the papers published in one volume will normally appear in part 2 of the succeeding volume. d. Participation in the discussion at a meeting, and the publication of his remarks in the Abstracts of Proceedings, will not preclude a Fellow from making a contribution to the subsequent Journal disoussion. The Council desires, in view of the present financial stringency and of the desirability of publishing in the Quarterly Journal all suitable papers with the least possible delay and at the lowest possible cost, to draw the attention of Fellows and other authors of papers to the necessity of reducing manuscripts and illustrations to the minimum, consistent with clear presentation of the subjec~matter. Authors who have in view the submission of papers to the Society should apply for the printed' Instructions to Authors' which the Secretaries will forward, with such other information as may be necessary. The Library at the Apartments of the Society is open on Mondays to Fridays from 10 o'clock until 4 o'clock, and on Saturdays from 10 o'clock until 1 o'clock.
CONTENTS 1. J. V. HARRISOZ~. The geology of the Central Andes in part of the Province of Junin, Peru.... 2. S. SMITH and C. C. Y~3. A revision of the coral genus Aulina Smith and descriptions of new species from Britain and China....... 3. L. M. DAw~s. Tertiary echinoidea of the Kohab-Potwar basin......... 4. R. G. S. HUDSON. On the Lower Carboniferous corals: Rhopalolasma bradbournense (Wilmore) and Rhapalolasma rylstonense sp. nov........ 81 5. L. I-I~wKEs. The erratics of the Cambridge Greensand: their nature, provenance and mode of transport.. 93 Discussion on papers published in previous volumes of the Quarterly Journal....... 105 Proceedings of the Geological Society, Session 1942-43, including the Anniversary Address of the President (Professor H. L. HAwkINS) : Evolution and habit among the Echinoidea : some facts and theories.. i-lxxv PIG~ 1 37 63 Written contributions to the discussions on papers published in this part of the Quarterly Journal will be accepted up to 31 March, 1944. Instructions as to the form in which contributions must be submitted will be found on p. iii of cover. The Editor of the Quarterly Journal is directed to make it known to the Public that the authors alone are responsible for the facts and opinions contained in their respective papers, and for the correctness of their references. PRINTED IN GREAT BRITAIN BY RIOHARD CLAY AND COMPANY, LTD. BUNGAY, SUFFOLK.
THE Nos. 395-96 QUARTERLY JOURNAL OF THE GEOLOGICAL SOCIETY OF LONDON EDITED BY THE ASSISTANT SECRETARY VOLUME XCIX, PARTS 3 & 4 (ISSUED 3 x JANUARY x944) LONDON: LONGMANS, GREEN & CO. LTD. 43 ALBERT DRIVE, S.W.x9 SOLD-ALSO AT THE APARTMENTS OF THE SOCIETY BURLINGTON HOUSE~ PICQADILLY, W.I Price Seven Shillings and Sixpence
GHOLOGICAL SOCIETY OF LONDON LIST OF THE OFFICERS AND COUNCIL Elected 17 March, 19~3 PRESIDENT. Prof. William George Fearnsides, ]~.A.F.R.S. VICE-PRESIDENTS Tom Eastwood, A.R.C.S.M.Inst.M.M. Prof. Herbert Harold Read, D.Sc. Prof. Herbert Leader Hawkins, D.Sc. A.R.C.S.F.R.SS.L. & E. F.R.S. Prof. Arthur Elijah Trueman, D.Sc. F.R.S.M.I.Miu.E. SECRETARIES Wilfred Norman Edwards, B.A. I David Williams, Assoc.Inst.M.M. Ph.D. M.Sc. B.E. I FOREIGN SECRETARY Sir Thomas Henry Holland, K.C.S.I.K.C.I.E.D.Sc. LL.D.F.R.S. Frederick Noel Ashcroft, M.A.F.C.S. Affred Joseph Bull, M.Sc. Ph.D.F.R.G.S. Oliver Meredith Boone Bulman, Sc.D. Ph.D.A.R.C.S.D.I.C.F.R.S. Leslie Reginald Cox, M.A. Sc.D. Tom Eastwood, A.R.C.S.M.Inst.M.M. Wilfred Norman Edwards, B.A. Percy Evans, B.A. Prof. William George Fearnsides, M.A. F.R.S. Arthur Francis Hallimond, M.A. Se.D. Sir Lewis Leigh Fermor, O.B.E.D.Sc. F.R.S.A.R.S.M.M.Inst.M.M. Prof.HerbertLeaderHawkins,D.Se.F.R.S. Sir Thomas Henry Holland, K.C.S.I. K.C.I.E.D.Se. LL.D.F.R.S. Prof. Herbert Price Lewis, M.A. Sc.D. TREASURER Frederick Noel Ashcroft, M.A., F.C.S. COUNCIL Frederick John North, D.Se. James Phemister, M.A.D.Se. F.R.S.E. Prof. Herbert Harold Read, D.Sc. A.R.C.S.F.R.SS.L. & E. Kenneth Stuart Sandford, T.D.M.A. D.Sc. D.Phil. Leonard James Spencer, C.B.E.M.A. Sc.D.F.R.S.F.C.S. Cyril James Stubblefield, Ph.D.B.Se. D.I.C.A.R.C.S. Prof. Arthur Elijah Trueman, D.Se. F.R.S.M.I.Min.E. Henry Cherry Versey, D.Sc. Prof. Walter Frederick Whittard, D.Sc. Ph.D.A.R.C.S.D.LC. David Williams, Ph.D. M.Sc. B.E. Assoe.Inst.M.M. ASSISTANT SECRETARY AND EDITOR Arthur Greig LIBRARIAN CLERK Miss E. D. Eastwood, F.L.A. Miss N. P. Morris ASSISTANT LIBRARIA.~ Miss A. Barber ASSISTANT IN THE LIBRARY Mrs. G. H. Barker, M.Sc. STANDING PUBLICATION COlYI1VIITTEE Prof. W. G. Fearnsides, President Mr. W N Edwards)... Dr. D.'W'~ams.f ~ecremr~es Sir Thomas Holland, Foreign Secretary Mr. F. N. Ashcroft, Treasurer Mr. T. Eastwood Dr. K. S. Sandford Mr. P. Evans Dr. L. J. Spencer Dr. A. F. Hallimond Dr. C. J. Stubblefield Prof. H. H. Read Prof. W. F. Whittard.
DISCUSSION ON PAPERS IN THE QUa2TE2Lr Jo~2NAr. The Council announces that the pages of the Quarterly Journal are open to the discussion of papers which have already appeared in the Journal. While every Fellow may contribute to these discussions, they are intended primarily for the benefit of Fellows (and particularly those resident overseas) who are unable to attend the meetings of the Society, and to afford such Fellows a closer contact with the Society's activities. Fellows are requested to comply with the following regulations when submitting their contributions to these discussions, since it will not be possible for the Secretaries to enter into correspondence about them or to submit proofs to the contributors. a. Notice will be given in each part of the Journal (norreally below the table of contents on the back page of the cover) of the latest date by which discussion of papers in that part will be accepted for consideration. The date selected will be such that all overseas Fellows will have reasonable time to contribute to the discussion. b. Contributions to these discussions should not as a rule exceed 250 words (half a page of the Journal), and they will be subject to editing by the Secretaries. They should be typewritten, and the title of the paper discussed, and the name of its author, appear plainly at the top of the typescript. c. Discussion of the papers published in one volume will normally appear in part 2 of the succeeding volume. d. Participation in the discussion at a meeting, and the publication of his remarks in the Abstracts of Proceed. ings, will not preclude a Fellow from making a contribution to the subsequent Journal disoussion. The Council desires, in view of the present ~n~neial stringency and of the desirability of publishing in the Quarterly Journal all suitable papers with the least possible delay and at the lowest possible cost, to draw the attention of Fellows and other authors of papers to the necessity of reducing manuscripts and illustratious to. the minlm~l, consistent with clear presentation of the subject-matter. Authors who have in view the submission of papers to the Society should apply for the printed ' Instructions to Authors' which the Secretaries will forward, with such other information as may be necessary. The Library at the Apartments of the Society is open on weekdays from 10 o'clock until 4 o'clock, including Saturdays.
CONTENTS PAGB 6. YU-CHI CHENG. The migmatite area around Bettyhill, Sutherland. (Plates XVII & XVIII)... 107 7. D. PARKINSO1% The origin and structure of the Lower Vis~an reef-knolls of the Clitheroe district, Lancashire. (Plate XIX)...... 155 8. F. G. H. BLYTH. Intrusive rocks of the Shelve area, South Shropshire. (Plate XX) 9. D. L. REYNOLDS. The south-western end of the Newry Igneous Complex. (Plates XXI & XXII).. 10. W. G. :FF,~RNSID~S and W. DAWES. The geology of Deudraeth. The country between Traeth Mawr and Traeth B ch, Merioneth. (Plates XXIII& XXIV). 169 205 247 Proceedings of the Geological Society, Session 1942-43, including Obituary Notices of :Foreign Members and Fellows deceased. lxxvii-xeiv Written contributions to the discussions on papers published in ~ part of the Quarterly Journal will be accepted up to 81 December, 1944. Instructions as to the form in which contributions must be submitted will be found on p. iii of cover. The Editor of the QuarterZy Journal is directed to make it known to the Public that the authors alone are responsible for the facts and opinions contained in their respective papers, and for the correctness of their references. PRINTED IN GR~Aq' BRITAIN BY ~IC~aUn CLAY AND 00MPANY, LTD. BUNGAY, SUFFOLK.