PROCEEDINGS 



OF 



THE ROYAL SOCIETY. 



Series B. Vol. 86. No. B 587. 



BIOLOGICAL SCIENCES. 



CONTENTS. 



Reciprocal Innervation and Symmetrical Muscles. By C. S. SHERRINGTON. 



F.R.S., Professor of Physiology, University of Liverpool . . . 219 



Nervous Rhythm arising from Rivalry of Antagonistic Reflexes : Reflex 

 Stepping as Outcome of Double Reciprocal Innervation. By 

 C. S. SHERRINGTON. F.R.S 233 



Herbage Studies. II. — Variation in Lotus corniculatus andTrifolium repens 

 (Cyanophoric Plants). By H. E. ARMSTRONG. F.R.S.. E. FRANKLAND 

 ARMSTRONG, and EDWARD HORTON 262 



The Trypanosomes found in the Blood of Wild Animals Living in the 

 Sleeping-Sickness Area, Nyasaland. By Surgeon-General Sir DAVID 

 BRUCE, C.B., F.R.S., A.M.S. ; Majors DAVID HARVEY and A. E. 

 HAMERTON, D.S.O., RA.M.C. ; Dr. J. B. DAVEY, Nyasaland Medical 

 Staff ; and Lady BRUCE, R.R.C 269 



Trypanosome Diseases of Domestic Animals in Nyasaland. II. — 

 Trypanosoma caprae (Kleine). By Surgeon-General Sir DAVID BRUCE, 



C. B., F.R.S., A.M.S. ; Majors DAVID HARVEY and A. E. HAMERTON, 



D. S.O., R.A.M.C. ; Dr. J. B. DAVEY, Nyasaland Medical Staff ; and 

 Lady BRUCE, R.R.C. (Plate 5) 278 



Morphology of Various Strains of the Trypanosome causing Disease in Man 

 in Nyasaland. I. — The Human Strain. By Surgeon-General Sir 

 DAVID BRUCE, C.B., F.R.S., A.M.S. ; Majors DAVID HARVEY and 

 A. E. HAMERTON, D.S.O., R.A.M.C. ; and Lady BRUCE, R.R.C. . . 285 



printed for THE ROYAL SOCIETY and sold by 



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

 Price Fotcr Shillings. 



No. B 587. 



April 7, 1913 



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