PROCEEDINGS 



OF 



THE ROYAL SOCIETY. 



Series B. Vol. 86. No. B 590. 



BIOLOGICAL SCIENCES. 



CONTENTS. 



Page 



Some Investigations on the Phenomena of "Clot" Formations. Part I. — 



On the Clotting of Milk. By S. B. SCHRYVER 46a 



On the Action of Radium Rays upon the Cells of Jensen's Rat Sarcoma. 



By S. RUSS. D.Sc. and HELEN CHAMBERS. M.D. (Plates 12 and 13) 482 



On Light-Sensations and the Theory of Forced Vibrations. By GEORGE J. 



BURCH, M.A., D.Sc. Oxon, F.R.S 490 



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



Part I.— The Normal Heart. By A. D. WALLER, M.D., F.R.S. . . 507 



Obituary Notices of Fellows Deceased :- — Lord Lister (with 2 Portraits) ; 



George Robert Milne Murray ; Adam Sedgwick . . . i — xxix 



printed for THE ROYAL SOCIETY and sold by 



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



Price Fozir Shillings and Sixpence. 



No. B 590. 



July 30. 1913. 



