﻿PROCEEDINGS 
  

  

  OF 
  

  

  THE 
  ROYAL 
  SOCIETY. 
  

  

  Series 
  B. 
  Vol. 
  91. 
  

  

  No. 
  B 
  638. 
  

  

  BIOLOGICAL 
  SCIENCES. 
  

  

  CONTENTS. 
  

  

  JUHl 
  1920 
  

   Library 
  

  

  The 
  Genetics 
  of 
  " 
  Rogues 
  " 
  among 
  Culinary 
  Peas 
  (Pisum 
  sativum). 
  By 
  

   W. 
  BATESON. 
  M.A., 
  F.R.S., 
  and 
  CAROLINE 
  PELLEW, 
  Student 
  of 
  

   the 
  John 
  Innes 
  Horticultural 
  Institution 
  ...... 
  

  

  The 
  Properties 
  of 
  Colloidal 
  Systems. 
  IV. 
  — 
  Reversible 
  Gelation 
  in 
  Living 
  

   Protoplasm. 
  By 
  W. 
  M. 
  BAYLISS, 
  F.R.S 
  

  

  Studies 
  of 
  Photo-synthesis, 
  in 
  Fresh-water 
  Algae. 
  — 
  1. 
  The 
  Fixation 
  of 
  both 
  

   Carbon 
  and 
  Nitrogen 
  from 
  the 
  Atmosphere 
  to 
  form 
  Organic 
  Tissue 
  by 
  

   the 
  Green 
  Plant 
  Cell. 
  2. 
  Nutrition 
  and 
  Growth 
  produced 
  by 
  High 
  

   Gaseous 
  Dilutions 
  of 
  Simple 
  Organic 
  Compounds, 
  such 
  as 
  Formaldehyde 
  

   and 
  Methylic 
  Alcohol. 
  3. 
  Nutrition 
  and 
  Growth 
  by 
  means 
  of 
  High 
  

   Dilutions 
  of 
  Carbon 
  Dioxide 
  and 
  Oxides 
  of 
  Nitrogen 
  without 
  Access 
  to 
  

   Atmosphere. 
  By 
  BENJAMIN 
  MOORE, 
  F.R.S., 
  and 
  T. 
  ARTHUR 
  

   WEBSTER 
  

  

  Obituary 
  Notices 
  of 
  Fellows 
  deceased 
  : 
  — 
  Edward 
  Saunders 
  (with 
  portrait) 
  ; 
  

   Roland 
  Trimen 
  (with 
  portrait) 
  ; 
  Thomas 
  Gregor 
  Brodie 
  . 
  . 
  xii- 
  

  

  age 
  

  

  1 
  86 
  

  

  196 
  

  

  201 
  

  

  A 
  Preliminary 
  Account 
  of 
  the 
  Meiotic 
  Phenomena 
  in 
  the 
  Pollen 
  Mother- 
  

   Cells 
  and 
  Tapetum 
  of 
  Lettuce 
  (Lactuca 
  sativa). 
  By 
  R. 
  RUGGLES 
  

   GATES, 
  Ph.D., 
  F.L.S., 
  Reader 
  in 
  Botany, 
  University 
  of 
  London 
  (King's 
  

   College) 
  216 
  

  

  -XXX 
  

  

  PRINTED 
  AND 
  PUBLISHED 
  FOR 
  THE 
  ROYAL 
  SOCIETY 
  BY 
  

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

   Price 
  Four 
  Shillings 
  and 
  Sixpence. 
  

  

  No 
  B 
  638. 
  

  

  May 
  12, 
  1920. 
  

  

  