﻿406 
  Mr. 
  L. 
  Vegard 
  : 
  Researches 
  upon 
  

  

  The 
  results 
  are 
  given 
  in 
  the 
  following 
  table 
  : 
  

  

  March 
  30. 
  

  

  March 
  31. 
  

  

  Apr 
  

  

  il 
  1. 
  

  

  ^ 
  = 
  12°-3C. 
  

  

  fc=ll°-8 
  0. 
  

  

  to 
  = 
  13° 
  -5. 
  

  

  Fig. 
  J 
  2, 
  

  

  Curve 
  I. 
  

  

  Fig. 
  14, 
  Curve 
  I. 
  

  

  Fig. 
  12, 
  Curve 
  II. 
  

  

  7T. 
  

  

  X'. 
  

  

  

  X'. 
  

  

  ;. 
  

  

  X. 
  

  

  atm. 
  

  

  mm./hour. 
  

  

  atm. 
  

  

  mni./hour. 
  

  

  atm. 
  

  

  mm./hour. 
  

  

  000 
  

  

  253 
  

  

  28-77 
  

  

  -39 
  

  

  52-44 
  

  

  +210 
  

  

  1086 
  

  

  -139 
  

  

  29 
  94 
  

  

  +4-2 
  

  

  70-80 
  

  

  +400 
  

  

  17-28 
  

  

  - 
  79 
  

  

  29-38 
  

  

  +0-6 
  

  

  68-50 
  

  

  +377 
  

  

  24-62 
  

  

  - 
  39 
  

  

  27 
  91 
  

  

  -8-1 
  

  

  66-40 
  

  

  +354 
  

  

  27-93 
  

  

  - 
  8-0 
  

  

  

  

  61-50 
  

  

  +315 
  

  

  30-30 
  

  

  + 
  11-2 
  

  

  

  55-80 
  

  

  +230 
  

  

  33-57 
  

  

  -1- 
  25-1 
  

  

  *=0. 
  

  

  4380 
  

  

  +107 
  

  

  36-52 
  

  

  + 
  45 
  

  

  Fig. 
  14, 
  Curve 
  II. 
  

  

  31-56 
  

  

  + 
  3-6 
  

  

  40-10 
  

   4560 
  

  

  + 
  69 
  

   +110 
  

  

  

  28-80 
  

   26*89 
  

  

  - 
  5-0 
  

  

  - 
  23-5 
  

  

  

  

  53-10 
  

  

  +198 
  

  

  28-52 
  

  

  - 
  1-5 
  

  

  22-35 
  

  

  - 
  72-0 
  

  

  61-40 
  

  

  +268 
  

  

  30-02 
  

  

  + 
  6-3 
  

  

  17-88 
  

  

  - 
  92 
  

  

  68-60 
  

  

  +341 
  

  

  31-46 
  

  

  + 
  10-3 
  

  

  12-43 
  

  

  -131 
  

  

  72-80 
  

  

  +380 
  

  

  27-75 
  

  

  — 
  5*7 
  

  

  7-98 
  

   3-60 
  

   055 
  

  

  -160 
  

   -177 
  

  

  -198 
  

  

  Experiment 
  IV. 
  

  

  We 
  shall 
  further 
  describe 
  one 
  experiment 
  that, 
  as 
  far 
  as 
  

   the 
  determination 
  of 
  the 
  equilibrium 
  pressure 
  is 
  concerned, 
  

   must 
  be 
  regarded 
  as 
  unsuccessful, 
  but 
  still 
  it 
  will 
  be 
  of 
  

   interest 
  for 
  the 
  study 
  of 
  the 
  properties 
  of 
  the 
  membrane. 
  It 
  

   is 
  also 
  necessary 
  to 
  give 
  the 
  result 
  for 
  the 
  sake 
  of 
  complete- 
  

   ness, 
  as 
  then 
  all 
  the 
  measurements 
  of 
  osmotic 
  pressure 
  done 
  

   are 
  given 
  in 
  the 
  paper. 
  

  

  This 
  was 
  the 
  first 
  experiment 
  done 
  at 
  Cambridge, 
  and 
  it 
  

   seems 
  as 
  if 
  the 
  transport 
  of 
  the 
  cell 
  has 
  caused 
  some 
  diminu- 
  

   tion 
  of 
  its 
  good 
  qualities. 
  The 
  electric 
  resistance 
  had 
  gone 
  

   down 
  to 
  20,000 
  ohms 
  at 
  2° 
  C. 
  ; 
  but, 
  as 
  we 
  have 
  seen, 
  it 
  soon 
  

   recovered. 
  

  

  The 
  solution 
  contained 
  320 
  gr. 
  in 
  the 
  litre 
  at 
  15° 
  C. 
  The 
  

   apparatus 
  was 
  put 
  up 
  on 
  Feb. 
  22, 
  and 
  the 
  velocities 
  near 
  the 
  

   reversion-point 
  examined 
  during 
  the 
  following 
  days. 
  The 
  

   apparatus 
  was 
  allowed 
  to 
  stand 
  under 
  the 
  reversion-pressure 
  

   during 
  the 
  nights. 
  As 
  it 
  was 
  my 
  intention 
  to 
  look 
  for 
  a 
  

   temperature 
  effect 
  the 
  temperature 
  in 
  some 
  of 
  the 
  measure- 
  

   ments 
  was 
  lowered 
  to 
  0°. 
  

  

  The 
  observations, 
  however, 
  gave 
  much 
  lower 
  equilibrium 
  

   pressure 
  than 
  anticipated, 
  and 
  at 
  the 
  same 
  time 
  the 
  obser- 
  

  

  