PROCEEDINGS 



OF 



THE ROYAL SOCIETY. 

 Series B. Vol. 87. No. B 592. 



BIOLOGICAL SCIENCES. 



Trypanosome Diseases of 

 Trypanosoma pecorum. 

 F.R.S., A.M.S. ; Majors 



CONTENTS. 



Domestic Animals in Nyasaland. III. — 

 By Surgeon-General Sir DAVID BRUCE, C.B., 

 DAVID HARVEY and A. E. HAMERTON, 



D.S.O., RA.M.C. ; and Lady BRUCE, R.R.C 



Morphology of Various Strains of the Trypanosome causing Disease in Man 

 in Nyasaland. — The Mzimba Strain. By Surgeon-General Sir DAVID 

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

 HAMERTON, D.S.6., R.A.M.C. ; and Lady BRUCE, R.R.C. (Plates 1-3) 

 The Trypanosome causing Disease in Man in Nyasaland. — Susceptibility of 

 Animals to 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 



Plasmodium cephalophi, sp. nov. 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. (Plates 4 and 5) . 

 Trypanosomes of the Domestic Animals in Nyasaland. I. Trypanosoma 



simiae, sp. nov. Part II. — The Susceptibility of Various Animals to 

 T. simiae. 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 



Trypanosome Diseases of Domestic Animals in Nyasaland. I. Trypanosoma 

 simiae, sp. nov. — Part III. 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. (Plates 6-8) . 



Notes on Toxoplasma gondii. By HELEN L. M. P1XELL, B.Sc, Beit 

 Memorial Research Fellow. (Plate 9) ..... 



The Growth and Sporulation of the Benign and Malignant Tertian Malarial 

 Parasites in the Culture Tube and in the Human Host. By JOHN 

 GORDON THOMSON, M.A., M.B., Ch.B. Edin., Pathologist to the Royal 

 Southern Hospital, Liverpool, and Durning- Lawrence Research Student ; 

 and DAVID THOMSON, M.B., Ch.B. Edin.. D.P.H. Cantab., Clinical and 

 Pathological Research Assistant, School of Tropical Medicine, Liverpool. 

 (Plate 10) 



CROONIAN LECTURE : The Origin of Mammals. By Dr. ROBERT 

 BROOM. (Abstract) 



Page 



26 



35 



45 



48 



58 

 67 



printed for THE ROYAL SOCIETY and sold by 



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



Price Ten Shillings. 



No. B 592. 



OCT'^ 



October 1, 1913. 



