﻿PROCEEDINGS 
  

  

  OF 
  

  

  THE 
  ROYAL 
  SOCIETY. 
  

  

  Series 
  B. 
  Vol. 
  91. 
  No. 
  B 
  636. 
  

  

  BIOLOGICAL 
  SCIENCES. 
  

  

  CONTENTS. 
  

  

  JAN 
  2 
  | 
  

  

  Page 
  

  

  The 
  Effect 
  of 
  Nitrogen-fixing 
  Organisms 
  and 
  Nucleic 
  Acid 
  Derivatives 
  on 
  

  

  Plant 
  Growth. 
  By 
  W. 
  B. 
  BOTTOMLEY, 
  M.A., 
  Ph.D. 
  ... 
  83 
  

  

  The 
  Vegetative 
  Morphology 
  of 
  Pistia 
  and 
  the 
  Lemnaceae. 
  By 
  AGNES 
  

  

  ARBER, 
  D.Sc, 
  F.L.S.. 
  Fellow 
  of 
  Newnham 
  College, 
  Cambridge 
  . 
  . 
  96 
  

  

  The 
  Genesis 
  of 
  (Edema 
  in 
  Beriberi. 
  By 
  ROBERT 
  McCARRISON, 
  M.D., 
  

  

  D.Sc, 
  F.R.C.P., 
  Brevet 
  Lieutenant-Colonel, 
  Indian 
  Medical 
  Service 
  . 
  103 
  

  

  Effect 
  of 
  Exercise 
  and 
  Humid 
  Heat 
  upon 
  Pulse 
  Rate, 
  Blood 
  Pressure, 
  Body 
  

   Temperature, 
  and 
  Blood 
  Concentration. 
  By 
  W. 
  J. 
  YOUNG, 
  A. 
  BREINL, 
  

   J. 
  J. 
  HARRIS, 
  and 
  W. 
  A. 
  OSBORNE 
  • 
  1 
  1 
  

  

  Obituary 
  Notices 
  of 
  Fellows 
  deceased 
  : 
  — 
  Frederick 
  Ducane 
  Godman 
  (with 
  

  

  portrait) 
  ... 
  i— 
  Vi 
  

  

  PRINTED 
  AND 
  PUBLISHED 
  FOR 
  THE 
  ROYAL 
  SOCIETY 
  BY 
  

   HARRISON 
  & 
  SONS. 
  44-47, 
  ST. 
  MARTIN'S 
  LANE, 
  LONDON, 
  W.C.2 
  

   Price 
  Three 
  Shillings 
  and 
  Sixpence. 
  

  

  No. 
  B 
  636. 
  

  

  January 
  1 
  , 
  1920. 
  

  

  