CONTENTS. Vll 



NUMBER PAGE 



XIV. On a New Species of Sclerocheilus, with a Revision of the Genus. By 

 J. H. Ash worth, D.Sc, Lecturer in Invertebrate Zoology in the 

 University of Edinburgh. (Plate XXXVII, and Four Text-figures), 405 



XV. Atlantic Sponges collected by the Scottish National Antarctic 

 Expedition. By Jane Stephens, B.Sc. Communicated by Dr 

 W.S.Bruce. (Plates XXXVIII-XL), .... 423 



XVI. On the Fossil Osmundaeeas. By R. Kidston, LL.D., F.R.S., F.G.S., 

 Foreign Mem. Imper. Mineralogical Society of Petrograd, Hon. Sec. 

 R.S.E. ; and D. T. Gwynne-Vaughan, M.A., F.Pv.S.K, M.R.I.A., 

 Professor of Botany, University College, Reading. (Plates XLI- 

 XLIV), ........ 469 



XVII. Studies on the Pharmacological Action of Tetr a- Alkyl- Ammonium 

 Compounds. II I. The Action of Methyl - Ethyl - Ammonium 

 Chlorides. By Professor C. R. Marshall, . . . .481 



PART III. (1913-14.) 



XVIII. The Histology of Disseminated Sclerosis. By James W. Dawson, 

 M.D., Neurological Histologist to the Royal College of Physicians' 

 Laboratory ; formerly Carnegie Research Fellow. To which is 

 prefaced a Preliminary Communication on the subject made to the 

 Pathological Society of Great Britain and Ireland by the late 

 Alexander Bruce, M.D., LL.D., and James W. Dawson, M.D. 

 Communicated by A. Ninian Bruce, M.D. (Plates XLV- 

 LXXVIII), ........ 517 



PART IV. (1913-14.) 



XIX. Temperature Observations in Loch Earn. Part II. By E. M. 



Wedderburn, D.Sc, and A. W. Young, M. A., B.Sc, . . 741 



XX. On TTsemonais laurentii, n. sp., a Representative of a little-known 

 Genus of Naididse. By J. Stephenson, D.Sc, Professor of Zoology, 

 Government College, Lahore. (Plate LXXIX), . . .769 



