V 



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The Properties of Colloidal Systems. I. — The Osmotic Pressure of Congo-red and 

 of some other Dyes. By W. M. Bayliss, F.R.S., Physiological Laboratory, 

 University College, London 269 



Some Effects of Nitrogen-fixing Bacteria on the Growth of Non-Leguminous Plants. 

 By W. B. Bottomley, M.A., Professor of Botany in King's College, London. 

 Communicated by Prof. J. Eeynolds Green, F.R.S 287 



The Intracranial Vascular System of Sphenodou. By Arthur Dendy, F.R.S. 



(Abstract) '. 290 



The Variations in the Pressure and Composition' of the Blood in Cholera ; and their 

 Bearing on the Success of Hypertonic Saline Transfusion in its Treatment. By 

 Leonard Rogers, M.D., F.R.C.P., F.R.C.S., I.M.S., Professor of Pathology, 

 Calcutta. Communicated by Sir T. Lauder Brunton, Bart., F.R.S 291 



The Effect of Heat upon the Electrical State of Living Tissues. By A. D. Waller, 



M.D., F.R.S 303 



The Incidence of Cancer in Mice of Known Age. By E. F. Bashford, M.D., and 

 J. A. Murray, M.D., B.Sc, Imperial Cancer Research Fund. Communicated 

 by Prof. J. Rose Bradford, Sec. R.S 310 



The Electrical Reactions of certain Bacteria, and an Application in the Detection of 

 Tubercle Bacilli in Urine by means of an Electric Current. By Charles Russ, 

 M.B. Communicated by A. D. Waller, M.D., F.R.S 314 



No. B 549.— October 9, 1909. 



Trypanosoma ingms, n. sp. By Colonel Sir David Bruce, C.B., F.R.S., Army 

 Medical Service ; Captains A. E. Hamerton, D.S.O., and H. R. Bateman, Royal 

 Army Medical Corps ; and Captain F. P. Mackie, Indian Medical Service. 

 (Plate 7) 323 



The Effect of the Injection of Intracellular Constituents of Bacteria (Bacterial 

 Endotoxins) on the Opsonising Action of the Serum of Healthy Rabbits. By 

 R, Tanner Hewlett, M.D. Communicated by Prof. W. D. Halliburton, F.R.S. 325 



The Alcoholic Ferment of Yeast-juice. Part IV — The Fermentation of Glucose, 

 Mannose, and Fructose by Yeast-juice. By Arthur Harden, F.R.S., and 

 W. 3. Young . 336 



The Discovery of a Remedy for Malignant Jaundice in the Dog and for Red water 

 in Cattle. By George H. F. Nuttall, M.D, Ph.D., Sc.D, F.R.S., Quick 

 Professor of Biology in the University of Cambridge ; and Seymour Hadwen, 

 D.V.Sci. (McGill) of the Dejmrtment of Agriculture, Canada 348 



The Vacuolation of the Blood-platelets : an Experimental Proof of their Cellular 

 Nature. By H. C. Ross, late Surgeon Royal Navy. Cornniunicated by Prof. 

 C. S. Sherrington, F.R.S 351 



Further Results of the Experimental Treatment of Trypanosomiasis : being a 

 Progress Report to a Committee of the Royal Society. By H. G. Plimmer, 

 P.L.S., and W. B. Fry, Captain R. A.M. C. Communicated by J. Rose Bradford, 

 M.D., Sec. R.S 354 



