VI 



PAOE 



No. B 557.— July 21, 1910. 



The Thyroid and Parathyroid Glands throughout Vertebrates. By F. D. Thompson. 



Communicated by Prof. E. A. Schiifer, F.E.S. (Abstract) 389 



Tone Perception in Gammarus pulex. By F. J. Cole, B.Sc, Professor of Zoology, 



University College, Reading. Communicated by A. E. Shipley, M.A., F.R.S.... 391 



A Physiological Effect of an Alternating Magnetic Field. By Silvanus P. Thompson, 



D.Sc, F.R.S 396 



On the Weight of Precipitate Obtainable in Precipitin Interactions. By Dr. H. G. 



Chapman. Communicated by Dr. C. J. Martin, F.R.S 398 



The Influence of Bacterial Endotoxins on Phagocytosis. (Prelimiuaiy Report.) By 

 Leonard S. Dudgeon, P. N. Panton, and H. A. F. Wilson. Communicated by 

 Dr. F. W. Mott, F.R.S 406 



A Case of Sleeping Sickness Studied by Precise Enumerative Methods : Regular 

 Periodical Increase of the Parasites Disclosed. By Major Ronald Ross, F.R.S., 

 and David Thomson, M.B., Ch.B., D.P.H 411 



On the Recognition of the Individual by Hsemolytic Methods. (Preliminary Com- 

 munication.) By Charles Todd, M.D., Bacteriologist, Egyptian Government, 

 and R. G. White, M.B., Dii'ector, Serum Institute, Cairo. Communicated by 

 Dr. C. J. Martin, F.R.S 416 



Experimental Researches on Vegetable Assimilation and Respiration. VI. — Some 

 Experiments on Assimilation in the Open Air. By D. Thoday, M.A., Junior 

 University Demonstrator in Botany, Cambridge. Communicated by Dr. F. F. 

 Blackman, F.R.S 421 



Receptors and Afferents of the Third, Fourth, and Sixth Cranial Nerves. By 



Frances M. Tozer, B.Sc, and C. S. Sherrington, D.Sc, F.R.S 4.50 



The Relation of Light Perception to Colour Perception. By F. W. Edridge-Green, 

 M.D., F.H.C.S., Beit Medical Research Fellow. Communicated by Prof. E. H. 

 Starling, F.R.S 458 



No. B 558.— August 10, 1910. 



Trypanosonie Diseases of Domestic Animals in Uganda. I. — Tn/panoKoma pecornm. 

 By Colonel Sir David Bruce, (".B., F.R.S., Army Medical Service ; Captains 

 A. E. Haiiierton, D.S.O., and H. R. Bateman, Royal Army Medical Corps ; and 

 Ca]>tain F. 1'. Mackie, Indian Medical Service. (Sleeping Sickness Commission 

 of the Royal Society, 1908-9). (Plates 11 aTid 12) 468 



Experiments to ascertain if Cattle may act as a Reservoir of the Virus of 

 Sl(!()))ing Sickness {Tryjxivimoma (jnmhleimi). By Colonel Sir David Bruce, 

 C.B., F.K.S., Army Modicnl Service; Cajitains A. V.. llamerton, D.S.O., and 

 H. R. Bateman, Royal Army Medical Corps; and Captain F. P. Mackie, 

 Indian Medical Service. (Sleeping Sickness Commission of the Royal Society, 

 1908-10) 480 



"Muhinyo," a Disease of Natives in Uganda. By Colonel Sir David Bruce, 

 C.H., F.If.S., Army Medical Service; Captains A. E. llamerton, D.S.O., and 

 H. U. Hatonian, Royal Army Medical Corps ; and Caj)tain F. P. Mackie, Indian 

 Medical Service. (Sleeping Sickness Comniission of tiie Koyal Society, 

 1908 10) \ 485 



