IV 



No. B 593.— October 16, 1913. 



pagI; 



The Trypanosomes causing Dourine (Mai de Colt or Beschalseuche). By 

 B. Blacklock, M.D., and Warrington Yorke, M.D. Communicated by Sir 

 Ronald Ross, K.C.B., F.R.S. (Plate 11) 89 



Studies in the Heat-production Associated with Muscular Work. (Preliminary 

 Communication : Section A. — Methods ; Section B. — Results.) By J. S. 

 Macdonald, University of Sheffield. Communicated by Prof. C. S. Sherrington, 

 F.R.S 96 



The Formation of the Anthocyan Pigments of Plants. — Part VI. By Frederick 

 Keeble, Sc.D., F.R.S., Professor of Botany, University College, Reading ; 

 E. Frankland Armstrong, D.Sc, Ph.D., and W. Neilson Jones, M.A., Lecturer 

 in Botany, University College, Reading 113 



On the Question of Fractional Activity (" All or None " Phenomenon) in 

 Mammalian Reflex Phenomena. By T. Graham Brown (Carnegie Fellow). 

 Communicated by Prof. C. S. Sherrington, F.R.S 132 



On Postural and Non-Postural Activities of the Mid-Brain. By T. Graham Brown 



(Carnegie Fellow). Communicated by Prof. C. S. Sherrington, F.R.S 145 



Synthesis by Sunlight in Relationship to the Origin of Life. Synthesis of 

 Formaldehyde from Carbon Dioxide and Water by Inorganic Colloids acting 

 as Transformers of Light Energy. By Benjamin Moore, D.Sc, F.R.S., and 

 T. A. Webster 163 



The Nature of the Coagulant of the Venom of Echis carinatus, a Small Indian Viper. 

 By J. 0. Wakelin Barratt, M.D., D.Sc. Loud. Communicated by Prof. J. N. 

 Langley, F.R.S 177 



No. B 594.— January 1, 1914. 



Negative After-images and Successive Contrast with Pure Spectral Colours. By 

 A. W. Porter, B.Sc, F.R.S., Fellow of University of London University 

 College, and F. W. Edridge-Green, M.D., F.R.C.S 190 



The Ratio between Spindle Lengths in the Spermatocyte Metaphases of Helix 

 pomatia. By C. F. U. Meek, M.Sc, F.L.S., F.Z.S. Communicated by Sir 

 W. T. Thiselton Dyer, K.C.M.G., CLE., F.R.S. (Plate 12) 192 



Neuro-Muscular Structures in the Heart. By A. F. Stanley Kent, M.A. Oxon., 

 Professor of Physiology, University of Bristol. Communicated by Prof. C. S. 

 Sherrington, F.R.S. ..." 198 



The Alleged Excretion of Creatine in Carbohydrate Starvation. By George 

 Graham, Beit Memorial Fellow, and E. P. Poulton, Radcliffe Travelling Fellow. 

 Communicated by Dr. F. G. Hopkins, F.R.S 205 



On Medullosa pusilla. By D. H. Scott, L.L.D., D.Sc, For. Sec. R.S. (Plate 13) ... 221 



The Origin and Destiny of Cholesterol in the Animal Organism. Part XI. — The 

 Cholesterol Content of Growing Chickens under Different Diets. By 

 J. A. Gardner and P. E. Lauder, Lindley Student of the University of 

 London. Communicated by Dr. A. D. Waller, F.R.S 229 



