TRANSACTIONS 



OF THE 



ROYAL SOCIETY OF EDINBURGH. 



VOLUME XLVIL PART IV.— SESSION 1910-11. 



CONTENTS. 



PAGE. 



XXII. The Temperature Seiche. Part I. — Temperature Observations in the Madiisee, Pomerania 

 Part II. — Hydrodynamical Theory of Temperature Oscillations in Lakes. Part III. — 

 Calculation of the Period of the Temperature Seiche in the Madiisee. By E. M. 

 Wedderburn, W.S. Part IV. — Experimental Verification of the Hydrodynamical 

 Theory of Temperature Seiches. By E. M. Wedderburn, W.S., and A. M. Williams, 

 M.A., B.Sc. (With One Plate), ....... 619 



(Issued January 21, 191 1.) 



XXIII. The Jurassic Flora of Sutherland. By A. C. Seward, F.E.S., Professor of Botany, Cam- 



bridge. Communicated by Dr K. Kidston, F.R.S. (Plates I.-X. ; text-figures 1-14; 

 sketch-maps, and views of the coast), ....... 643 



(Issued February 10, 1911.) 



XXIV. On the Structure and Affinities of Diplolabis romeri (Solms). By W. T. Gordon, M.A., 



B.Sc, B.A., Falconer Fellow of Edinburgh University, Lecturer in Palaeontology, 

 Edinburgh University. (With Four Plates), . . . . . .711 



(Issued February 4, 1911.) 



XXV. Thermo- Electric Diagram from - 200° C. to 100° C, deduced from the observations of 

 Professors Dewar and Fleming. By J. D. Hamilton Dickson, M.A., Peterhouse, 

 Cambridge, . . . . . . . . . 737 



(Issued March 17, 1911.) 



XXVI. The Plant Remains in the Scottish Peat Mosses. Part IV. By Fbancis J. Lewis, M.Sc, 



F.L.S., Lecturer in Geographical Botany, University of Liverpool. (With Five Plates), 793 



(Issued March 31, 1911.) 



XXVII. On an Entoproctan Polyzoon (Barentsia benedeni) new to the British Fauna, with Remarks 

 on Related Species. By James Ritchie, M.A., B.Sc, Natural History Department, The 

 Royal Scottish Museum. (With One Plate), ...... 835 



(Issued April 18, 1911.) 



XXVIII. An Investigation into the Effects of Errors in Surveying. By Henry Briggs, B.Sc, 



A.R.S.M., .......... 849 



(Issued April 18, 1911.) 



Title, Contents, and Index. 



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