Transactions of the Royal Society of Edinburgh

TRANSACTIONS OF THE ROYAL SOCIETY OF EDINBURGH. VOLUME LVI, PART III.—SESSION 1930-31. (Last part of Volume LVI.)

CONTENTS. PAQK XXIII. The Feeding Mechanism, Formation of the Tube, and Physiology of Digestion in Sabella pavonina. By E. A. T. NICOL, B.A., Ph.D. Communicated by Professor J. H. ASHWORTH, F.R.S. (With Two Plates, Twenty-one Text-figures, and Seven Graphs) 537 (Issued August 7, 1930.)

XXIV. The Carboniferous Sediments of Kintyre. By WILLIAM J. M'CALLIBN, D.SC, Lecturer in Geology, Glasgow University, and ROBERT B. ANDERSON, The Bwana M'Kubwa Copper Mining Co., Ltd., Northern Rhodesia. Communicated by Dr G. W. TYRRELL. (With One Plate and Twelve Text-figures) ...... 599 (Issued July 8, 1930.)

XXV. Metamorphism in Relation to Structure in the Scottish Highlands. By GERTRUDE LILIAN ELLES, M.B.E., D.Sc, and CECIL EDGAR TILLEY, Ph.D., B.Sc. Communicated by Professor E. B. BAILEY, M.C., B.A., F.R.S. (With Two Plates, Nine Text-figures, and One Table) ...... 621 (Issued July 16, 1930.) XXVI. Reports of the Jasper Park Lakes Investigations, 1925-26. The Mollusca of Jasper Park. By ALAN MOZLEY, University of Manitoba. Communicated by Dr CHARLES H. O'DONOGHUE. (With Two Plates and One Text-figure) . . . .647 (Issued August 4, 1930.)

XXVII. The Old Red Sandstone of Shetland. Part II. North-Western Area. By T. M. FINLAY, M.A., D.Sc. (With Three Plates and Three Text-figures) . . . .671 (Issued September 29, 1930.) XXVIII. The Stem-Endodermis in the Genus Piper. By GEORGE BOND, B.SC, Ph.D., Lecturer in Botany, University of Glasgow. Communicated by Professor MONTAGU DRUMMOND. (With Three Plates and Eleven Text-figures) . . . . .695 (Issued March 10, 1931.) XXIX. On the Morphology, Feeding Mechanisms, and Digestion of Ensis siliqua (Schumacher). By ALASTAIR GRAHAM, M.A., B.Sc. (Edin.), Lecturer in Zoology in the University of Sheffield. Communicated by Professor J. H. ASHWORTH, F.R.S. (With One Plate, Eight Text-figures, and Five Graphs) ...... 725 (Issued March 23, 1931.)

XXX. The Dolerite Isles of the North Minch. By FREDERICK WALKER, M.A., D.Sc, Lecturer in Geology, University of St Andrews. (With One Plate and One Text-figure) 753 (Issued March 30, 1931.) XXXI. The British and Belgian Carboniferous Bellerophontidm. By JOHN WEIR, Ph.D., F.G.S. Communicated by Professw E. B. BAILEY, M.C., M.A., F.R.S. (With One large Folding Table and Nine Plates) ...... 767 (Issued June 11, 1931.)

INDEX ...... 863

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PAET I. (1928-20).

MUMBKIl PACK I. The Igneous Intrusions between St Andrews and Loch Leven. By FREDERICK WALKER, M.A., Ph.D., Carnegie Teaching Fellow, and JOHN IRVING, B.SC, Carnegie Research Scholar, University of Sfc Andrews. (With One Plate and Four Text-figures), ...... 1

*II. Size in Relation to Internal Morphology. No. 3. The Vascular System of Boots. By CLAUDE W. WARDLAW, B.SC, Ph.D., Lecturer in Botany, Glasgow Univer- sity. (With Twenty-two Text-figures), . . . . .19

III. The Geology of the Highland Border from Tayside to Noranside. By DOUGLAS A. ALLAN, Ph.D., D.Sc., F.R.S.E., Lecturer in Geology in Armstrong College, University of Durham. (With Two Plates, Seven Text-figures, and a Coloured Map), ...... 57

*IV. Calamoichthys calabaricus J. A. Smith. Fart I. The Alimentary and Respir- atory Systems—concluded. By G. LESLIE PURSER, M.A., University of Aberdeen. (With Three Plates and Five Text-figures), . . .89 V. On Some Points in the Anatomy and Habits of the Lophogastrid Crustacea. (From the Zoological Laboratory, Cambridge.) By S. M. MANTON, M.A., Ph.D., F.L.S., Demonstrator in Comparative Anatomy in the University of Cam- bridge, and Fellow of Girton College. Communicated by Professor J. H. ASHWORTH, F.R.S. (With Three Plates and Two Text-figures), . . 103 VI. A Contribution to Actinian Morplwlogy: the Genera Phellia and Sagartia. By T. A. STEPHENSON, D.SC, Zoology Department, University College, London. Communicated by Professor J. H. ASHWORTH, F.R.S. (With Two Coloured Plates and Twelve Text-figures), ...... 121 VII. A Gravitational Survey over the Buried Kelvin Valley at Drumry, near Glasgow. By W. F. P. MCLINTOCK, D.Sc, and J. PHEMISTER, M.A., D.Sc. Communi- cated by permission of the DIRECTOR, H.M. GEOLOGICAL SURVEY. (With Two Coloured Plates and Ten Text-figures), ..... 141

*VIII. The Oogenesis of Carcinus mo&nas Penn., with Special Reference to Yolk Formation. By L. A. HARVEY, M.SC, Lecturer in Zoology, University of Edinburgh. Communicated by Professor J. H. ASHWORTH, F.R.S. (With Two Plates and Seven Text-figures), ...... 157

NUMBER PAOK IX. On the Feeding Mechanism of the Syncarid Crustacea. By H. GRAHAM CANNON, M.A., D.Sc, Professor of Zoology in the University of Sheffield, and Miss S. M. MANTON, M.A., Ph.D., F.L.S., Demonstrator in Comparative Anatomy in the University of Cambridge and Fellow of Girton College. (With Eight Text-figures), ...... 175

X. A Human Blastocyst in situ. By C. WITHEKINGTON STUMP, M.D., D.Sc, Bosch Professor of Histology and Embryology in the University of Sydney. Com- municated by Professor A. ROBINSON, M.D. (With Ten Plates), . . 191

XI. The Anatomy of a Foetal African Elejrfiant, Elephas africanus (Loxodonta africana). Part III. The Contents of the Thorax and Abdomen, and the Skeleton. By NELLIE B. EALES, D.Sc.Lond., Lecturer in Zoology in the University of Reading. Communicated by Professor J. H. ASHWORTH, F.R.S. (With Six Plates), ...... 203

PART II. (1929-30).

XII. A Study of the Effect of Diurnal Periodicity upon Plant Groioth. By GEORGE REDINGTON, M.SC, Lecturer in Plant Physiology, University of Aberdeen. Communicated by Professor W. G. CRAIB. (With Two Plates and Four Text- figures), ...... 247

XIII. Jurassic and Kainozoic Corals from Somaliland. By MARY H. LATHAM, M.A., Carnegie Research Fellow, Glasgow University. Communicated by Professor J. W. GREGORY, F.R.S. (With Two Plates and Four Text-figures),. . 273

XIV. Studies on the Scottish Marine Fauna: The Fauna of the Sandy and Muddy Areas of the Tidal Zone. By A. C. STEPHEN, B.SC, Royal Scottish Museum, Edinburgh. (With Five Text-figures), . . . . .291

XV. Studies in the Edocarpacece. II. The Life-history and Cytology of Ectocarpus siliculosus, Dillw. By MARGERY KNIGHT, D.SC. Communicated by Pro- fessor J. M'LEAN THOMPSON. (With Six Plates and Three Text-figures), . 307

*XVI. On Abnormal Teeth in Certain Mammals, especially in the Rabbit. By W. C. M'INTOSH, M.D., LL.D., D.Sc, F.R.S., Emeritus Professor of Natural History, Gatty Marine Laboratory, University of St Andrews. (With 103 Text-figures), ...... 333

XVII. The Metamorphic Rocks of Kintyre. By WILLIAM J. MCCALLIEN, B.SC, Lecturer in Geology, Glasgow University. Communicated by Dr G. W. TYRRELL. (With Eleven Text-figures) . . . . .409

NUMIIHt PAQK *XYIII. Notes on the Development of Callichthys littoralis. By FRANCES M. BALLANTYNE, M.A., Zoology Department, University of Glasgow. Communicated by Professor J. GUAHAM KERR, F.R.S. (With Three Plates and Thirty Text- figures), ...... 437

*XIX. Chromosome Linkage and Syndesis in CEnothera. By DAVID G. CATCHESIDE, M.Sc, Assistant in Botany, University of Glasgow. Communicated by Professor MONTAGU DRUMMOND. (With Three Plates), . . . 467

XX. The Genus Dictyoconus and its Allies: A Review of the Group, together with a Description of Three Neio Species from the Lower Eocene Beds of Northern Baluchistan. By Lieut.-Colonel L. M. DAVIES, B.A., F.G.S. (With Two Plates and Nine Text-figures), ...... 485

XXI. A Study of Apothecial Development in the Leaf-spot Disease of Red Clover. By S. G. JONES, D.SC, Lecturer in Botany and Mycology, University of Glasgow. Communicated by Professor MONTAGU DRUMMOND. (With Nine Text-figures) 507

XXII. Studies on the Scottish Marine Fauna. Additional Observations on the Fauna of the Sandy and Muddy Areas of the Ti-dal Zone. By A. C. STEPHEN, B.SC. (With One Plate and One Text-figure), . . . . .521

PAET III. (1930-31). *XXIII. The Feeding Mechanism, Formation of the Tube, and Physiology of Digestion in Sabella pavonina. By E. A. T. NICOL, B.A., Ph.D. Communicated by Pro- fessor J. H. ASHWORTH, E.E.S. (With Two Plates, Twenty-one Text- figures, and Seven Graphs), ...... 537

*XXIV. The Carboniferous Sediments of Kintyre. By WILLIAM J. MCGALLIEN, D.SC, Lecturer in Geology, Glasgow University, and ROBERT B. ANDERSON, The Bwana M'Kubwa Copper Mining Co., Ltd., Northern Rhodesia. Com- municated by l)r (J. W. TYUUELL. (With One Plate and Twelve Text-figures), 599

XXVI. Reports of the Jasper Park Lakes Investigations, 1925-20. The Mollusca of Jasper Park. By ALAN MOZLEY, University of Manitoba. Communicated by Dr CHARLES H. O'DONOGHUE. (With Two Plates and One Text-figure), 047

*XXVII. The Old Red Sandstone of Shetland, Part 11. North-Western Area. By T. M. FINLAY, M.A., D.Sc. (With Three Plates and Three Text-figures), . 671

.il'MIIKIt PAOK *XXVIIL The Stem-Endodermis in the Genus Piper. By GEORGE BOND, B.SC., Ph.D., Lecturer in Botany, University of Glasgow. Communicated by Professor MONTAGU DRUMMOND. (With Three Plates and Eleven Text-figures), . 695

*XXIX. On the Morphology, Feeding Mechanisms, and Digestion of Ensis siliqua (Schumacher). By ALASTAIR GRAHAM, M.A., B.Sc. (Edin.), Lecturer in Zoology in the University of Sheffield. Communicated by Professor J. H. ASHWOUTH, F.E.S. (With one Plate, Eight Text-figures, and Five Graphs), 725

XXX. The Dolerite Isles of the North Minch. By FREDERICK WALKER, M.A., J).Sc, Lecturer in Geology, University of St Andrews. (With One Plate and One Text-figure), ...... 753

*XXXI. The British and Belgian Carboniferous Bellerophontidce. By JOHN WEIR, Ph.D., F.G.S. Communicated by Professor E. B. BAILEY, M.C., M.A., F.K.S. (With One large Folding Table and Nine Plates), . . 767

INDEX, ...... 863

* The thanks of the Society are due to the Carnegie Trust for the Universities of Scotland for grants towards the cost of the illustrations of these papers.