V 



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The Trypanosome causing Disease in Man in Nyasaland. II. The Wild-game 

 Strain. III. The Wild Glossina morsitans Strain. Part II. — Susceptibility of 

 Animals. By Surgeon-General Sir David Bruce, C.B., F.E.S., A.M.S. ; Major 

 A. E. Hamerton, D.S.O., and Captain D. P. Watson, E.A.M.C. ; and Lady 

 Bruce, E.E.C. (Scientific Commission of the Eoyal Society, Nyasaland, 1912-14) 205 



The Trypanosome causing Disease in Man in Nyasaland. The Naturally Infected 

 Dog Strain. Part III. — Development in Glossina morsitans. By Surgeon- 

 General Sir David Bruce, C.B., F.E.S., A.M.S. ; Major A. E. Hamerton, D.S.O., 

 and Captain D. P. Watson, E.A.M.C. ; aud Lady Bruce, E.E.C. (Scientific 

 Commission of the Eoyal Society, Nyasaland, 1912-14) 213 



The Trypanosome causing Disease in Man in Nyasaland. The Naturally Infected 

 Dog Strain. Part IV. — Experiments on Immunity. By Surgeon-General Sir 

 David Bruce, C.B., F.E.S., A.M.S. ; Major A. E. Hamerton, D.S.O., and 

 D. P. Watson, E.A.M.C. ; and Lady Bruce, E.E.C. (Scientific Commission of 

 the Eoyal Society, Nyasaland, 1912-14) 219 



The Colouring Matters in the Compound Ascidian Diazona violacea, Savigny. By 



Alfred Holt, M.A., D.Sc. Communicated by Prof. W. A. Herdman, F.E.S. ... 227 



Some Accessory Factors in Plant Growth and Nutrition. By W. B. Bottomley, 

 M.A., Professor of Botany, University of London, King's College. Communi- 

 cated by Prof. F. W. Oliver, F.E.S 237 



Further Observations on the Changes in the Breathing and the Blood at Various 

 High Altitudes. By Mabel Purefoy FitzGerald. Communicated by J. S. 

 Haldane, F.E.S 248 



Constancy of the Optimum Temperature of an Enzyme under Varying Concentra- 

 tions of Substrate and of Enzyme. By Arthur Compton, Imperial Cancer 

 Eesearch Fund. Communicated by Sir J. E. Bradford, K.C.M.G., Sec. E.S. ... 258 



A Theory of the Action of Eays on Growing Cells. By J. Joly, Sc.D., F.E.S 262 



The Influence of Timbre and Loudness on the Localisation of Sounds. By Charles S. 



Myers. Communicated by Prof. C. S. Sherrington, F.E.S 267 



No. B 603.— December 1, 1914. 



A Comparative Study of Oxidation by Catalysts of Organic and Inorganic Origin. 

 By Alfred J. Ewart, D.Sc, Ph.D., Professor of Botany and Plant Physiology 

 in the Melbourne University and Government Botanist of Victoria. Commu- 

 nicated by Prof. J. Eeynolds Green, F.E.S 284 



The Fixation of Arsenic by the Brain after Intravenous Injections of Salvarsan. 

 By James Mcintosh, Beit Memorial Eesearch Fellow, and Paul Fildes, 

 Assistant Bacteriologist to the London Hospital. Communicated by Prof. 

 W. Bulloch, F.E.S v 320 



The Production of Anthocyanius and Anthocyanidins. — Part II. By Arthur Ernest 

 Everest, M.Sc, Ph.D. (Lecturer in Chemistry, University College, Beading). 

 Communicated by Prof. Frederick Keeble, F.E.S 326 



Crooxiax Lecture : The Bearing of Cytologic;*! Eesearch on Heredity. By 

 Edmund B. Wilson, Da Costa Professor of Zoology, Columbia University, 

 New York 333 



