PROCEEDINGS 



OF 



THE ROYAL SOCIETY 



Series B. Vol. 89. No. B 617. 



BIOLOGICAL SCIENCES. 



CONTENTS. 



The Ultra- Violet Absorption Spectra of Blood Sera. By S. JUDD LEWIS, 



D.Sc. (Tubingen), B.Sc. (London), F.I.C 327 



An Experimental Investigation into the Role of the Blood Fluids in the Intra- 

 cellular Digestion of Certain Bacteria and Red Blood Corpuscles. By 

 S. R. DOUGLAS, M.R.C.S., L.R.C.P. (Lond.), Captain I. M.S. (Retired), 

 1st Assistant, Bacteriological Department, Medical Research Committee, 



National Insurance Act ......... 335 



Some Photochemical Experiments with Pure Chlorophyll and their Bearing 

 on Theories of Carbon Assimilation. By INGVAR JORGENSEN and 

 FRANKLIN KIDD .......... 342 



Investigations dealing with the Phenomena of " Clot " Formations. Part IV. — 

 The Diphasic Erosive Action of Salts on the Cholate Gel. By 

 S. B. SCHRYVER and MARY HEWLETT 36 1 



Selective Permeability : The Absorption of Phenol and other Solutions by 

 the Seeds of Hordeum vulgare. By ADRIAN J. BROWN, F.R.S., and 

 FRANK TINKER, M.Sc 353 



Methods of Raising a Low Arterial Pressure. By W. M. BAYLISS, F.R.S. . 380 



printed for THE ROYAL SOCIETY and sold by 



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

 Price Three Shillings. 



No. B 617. 



November 1, 1916. 



