TRANSACTIONS 



OF THE 



ROYAL SOCIETY OF EDINBURGH. 



VOLUME L. PART I.— SESSION 1913-14. 



CONTENTS. 



PAQH 



I. Sphxrostoma ovale (Conostoma ovale et intermedium, Williamson), a Lower Carboniferous 

 Ovule from Pettycur, Fifeshire, Scotland. By Margaret J. Benson, D.Sc., Professor of 

 Botany in the University of London, Head of the Department of Botany at the Royal 

 Holloway College, Englefield Green, Surrey. Communicated, by Dr R. Kidston, F.R.S. 

 (Plates I. and II.), ......... 1 



(Issued January 7, 1914.) 



II. Studies on the Pharmacological Action of Tetra-alkyl-ammonium Compounds. I. Hie Action 



of Tetra-methyl-ammonium Chloride. By Professor C. R. Marshall, . . .17 



(Issued December 29, 1913.) 



III. Polychxta of the family Nereidee, collected by the Scottish National Antarctic Expedition 



(1902-1904). By L. N. G. Ramsay, M.A., B.Sc, Carnegie Research Scholar, Christ's 

 College, Cambridge. Communicated by Dr J. H . Ashworth. (Plate III.), . . 41 



(Issued March 30, 1914.) 



IV. On the Genus Porponia and Related Genera, Scottish National Antarctic Expedition. By 



Professor Oskar Carlgren, Universitetets Zoologiska Institution, Lund. Communicated 



by Dr W. S. Bruce. (Plate IV.), ........ 49 



(Issued March 30, 1914.) 



V. On the Fossil Flora of the Staffordshire Coal Fields. Part III.— The Fossil Floi-a of the 

 Westphalian Series of the South Staffordshire Coal Field. By R. Kidston, LL.D., F.R.S. 

 (Plates V.-XVI.), 73 



(Issued March 12, 1914.) 



VI. The Anatomy of a New Species of Bathydoris, and the Affinities of the Genus: Scottish National 

 Antarctic Expedition. By T. J. Evans, M.A. (Oxon.), Lecturer in Zoology in the University 

 of Sheffield. Communicated by Dr J. H. Ashworth. (Plates XVII. and XVIIL), . 191 



(Issued April 1, 1914.) 



VII. Rupture Stresses in Beams and Crane Hooks. By Angus R. Fulton. B.Sc, A.M.Inst.CE., 

 Engineering Department, University College, Dundee. Communicated by Professor A. H. 

 Gibson, D.Sc, A.M.Inst.CE., . . . .211 



(Issued April 15, 1914.) 



VIII. Scottish National Antarctic Expedition : A Description of the Systematic Anatomy of a Foetal 

 \A Sea-Leopard (Stenorhynchus leptonyx), with Remarks upon the Microscopical Anatomy of 

 some of the Organs. By Harold Axel Haig, M.B., B.S., M.R.C.S., late Lecturer in 

 Histology and Embryology, University College, Cardiff; M'Robert Research Fellow, 

 University of Aberdeen. Communicated by Professor Arthur Robinson, M.D. (Plates 

 XIX.-XXIL), .225 



(Issued April 30, 1914.) 





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