Page 



On the Part played by Benzene in Poisoning by Coal Gas. By R. 

 Staehelin, M.D., Senior Assistant in the Medical Clinic at Basle. 

 Communicated by Professor E. H. Starling, F.K.S 78 



The " Islets of Laiigerhans " of the Pancreas. By H. PL Dale, B.Ch., 

 George Henry Lewes Student. Communicated by Professor Starling, 

 M.D., F.R.S. (Abstract) 84 



The Reduction Division in Ferns. By P. P. Gregory, St. John's 

 College, Cambridge, University Demonstrator in Botany. Communi- 

 cated by Professor H. Marshall Ward, F.E.S 86 



The Secreto-motor Effects in the Cat's Foot Studied by the Electro- 

 meter. By Augustus D. Waller, M.D., F.RS 92 



On the Effects of Joining the Cervical Sympathetic Nerve with the 

 Chorda Tympani. By J. N. Langley. F.R.S., arid H. K. Anderson, 

 M.D ' 99 



The Longitudinal Stability of Aerial Gliders. By G. H. Bryan, Sc.D., 

 F.R.S., and W. E. Williams, B.Sc, University College of North 

 Wales , 100 



Cultural Experiments with " Biologic Forms" of the Erysiphacece. By 

 Ernest S. Salmon, F.L.S. Communicated by Professor H. Marshall 

 Ward, F.RS. (Abstract) 116 



On the Origin of Parasitism in Fungi. By George Massee, Principal 

 Assistant, Herbarium, Royal Gardens, Kew. Communicated by 

 Sir William T. Thiselton-Dyer, K.C.M.G., CLE., F.RS. (Abstract) 118 



No. 4.90.— March 7, 1904. 



A New Method of Detecting Electrical Oscillations. By J. A. Ewing, 

 LL.D., F.RS., and L. H. Walter, M.A 120 



Constant-standard Silver Trial- Plates. By Edward Matthey, C.B., 

 F.S.A., F.C.S., Assoc. Roy. Sch. Mints. Communicated by Sir 

 William Crookes, F.R.S „....„ 124 



Further Observations on the Role of the Blood Fluids in connection 

 with Phagocytosis. By A. E. Wright, M.D., late Professor of 

 Pathology, Army Medical School, Netley, Pathologist to St. Mary's 

 Hospital, W., and Stewart R. Douglas, M.R.C.S., Captain, Indian 

 Medical Service. Communicated by Sir J. Burdon Sanderson, F.R.S. 

 (Plate 3) , 128 



Suiispot Variation in Latitude, 1861—1902. By William J. S. Lockyer, 

 M.A. (Camb.), Ph.D. (Gott.), F.R.A.S., Chief Assistant, Solar Physics 

 Observatory. Communicated by Sir Norman Lockyer, K.C.B., 

 LL.D., F.R.S. (Plates 4 and 5) 142 



On the Compressibilities of Oxygen, Hydrogen, Nitrogen, and Carbonic 

 Oxide between One Atmosphere and Half an Atmosphere of Pressure, 

 and on the Atomic Weights of the Elements concerned. — Preliminary 

 Notice. By Lord Rayleigh, O.M., F.R.S 153 



Theory of Amphoteric Electrolytes. By Professor James Walker, 

 F.R.S., University College, Dundee , 155 



