PROCEEDINGS 



OF 



THE ROYAL SOCIETY. 

 Series B. Vol. 88. No. B 602. 



BIOLOGICAL SCIENCES. 



— ' 



CONTENTS. V M ° V 12 



Morphology of Various Strains of the Trypanosome causing Disease in 

 Man in Nyasaland : The Human Strain (continued). — VI to X. By 

 Surgeon-General Sir DAVID BRUCE, C.B., F.R.S., A.M.S. ; Major 

 A. E. HAMERTON, D.S.O.. and Captain D. P. WATSON, R.A.M.C. ; 

 and Lady BRUCE, R.R.C 190 



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.R.S., A.M.S. ; Major A. E. HAMERTON, D.S.O., and Captain 



D. P. WATSON, R.A.M.C. ; and Lady BRUCE, R.R.C. . . . 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.R.S., A.M.S. ; Major 

 A. E. HAMERTON, D.S.O., and Captain D. P. WATSON, R.A.M.C. ; 

 and LADY BRUCE, R.R.C 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.R.S.. A.M.S. ; Major 

 A. E. HAMERTON, D.S.O., and Captain D. P. WATSON, R.A.M.C. ; 

 and LADY BRUCE, R.R.C. . 219 



The Colouring Matters in the Compound Ascidian Diazona violacea, 



Savigny. By ALFRED HOLT, M.A., D.Sc 227 



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

 BOTTOMLEY, M.A., Professor of Botany, University of London, King's 

 College 237 



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



Various High Altitudes. By MABEL PUREFOY FITZGERALD . . 248 



Constancy of the Optimum Temperature of an Enzyme under Varying 

 Concentrations of Substrate and of Enzyme. By ARTHUR COMPTON, 

 Imperial Cancer Research Fund . . . . . . . .258 



A Theory of the Action of Rays on Growing Cells. By J. JOLY, Sc.D., 



F.R.S ... . 262 



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



CHARLES S. MYERS 267 



printed for THE ROYAL SOCIETY and sold by 



HARRISON & SONS, 45, ST. MARTIN'S LANE, LONDON, W.C. 

 Price Three Shillings. 



No. B 602. 



September 15, 1914. 



