PROCEEDINGS 



OF 



THE ROYAL SOCIETY. 

 Series B. Vol.88. No. B 600. 



BIOLOGICAL SCIENCES. 



CONTENTS. Page 



The Influence of Osmotic Pressure upon the Regeneration of Gunda ulvae. 

 By DOROTHY JORDAN LLOYD, B.Sc, Bathurst Student, Newnham 

 College, Cambridge .......... I 



Glossina brevipalpis as a Carrier of Trypanosome Disease in Nyasaland. 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. (Plate 1) 20 



Trypanosome Diseases of Domestic Animals in Nyasaland. III. — 

 Trypanosoma pecorum. 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. (Plate 2) 33 



Trypanosomas found in Wild Glossina morsitans and Wild Game in the 

 " Fly-Belt " of the Upper Shire Valley. 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. . 38 



The Food of 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. . . 4 1 



Infectivity of Glossina morsitans in Nyasaland during 1912 and 1913. By 

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

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

 Lady BRUCE, R.R.C. ......... 43 



The Various Inclinations of the Electrical Axis of the Human Heart. 

 Part Ia.— The Normal Heart : Effects of Respiration. By AUGUSTUS 

 D. WALLER, M.D., F.R.S. (Plates 3-6) 49 



On the Relation between the Thymus and the Generative Organs and the 

 Influence of these Organs upon Growth. By E. T. HALNAN and 

 F. H. A. MARSHALL. (With a Note by G. UDNY YULE) . . 68 



The Cultivation of Human Tumour Tissue in Vitro. — Preliminary Note. 

 By DAVID THOMSON, M.B., Ch.B. (Edin.), D.P.H. (Cantab.); Grocers' 

 Research Scholar, and JOHN GORDON THOMSON, M.A., M.B., Ch.B. 

 (Edin.), Beit Memorial Research Fellow. (Plate 7) . . 



PRINTED FOR THE ROYAL SOCIETY AND SOLD W / 



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



Price Six Shillings. 



No. B 600. 



August 6, 1914. 



