﻿402 
  

  

  Mr. 
  L. 
  Yegard 
  : 
  Re 
  sear 
  dies 
  upon 
  

  

  change 
  of 
  1 
  mm. 
  of 
  the 
  mercury 
  column, 
  and 
  this 
  quantity 
  

   is 
  easily 
  found 
  by 
  observing 
  the 
  change 
  of 
  the 
  water-level 
  

   for 
  a 
  certain 
  change 
  of 
  the 
  mercury 
  column. 
  

  

  Experiment 
  4. 
  

  

  Apparatus 
  put 
  up 
  Dec. 
  17. 
  

  

  Resistance 
  of 
  the 
  membrane 
  360,000 
  ohms 
  at 
  2° 
  # 
  5 
  C. 
  

  

  G 
  = 
  340 
  gr./l. 
  at8°'7C. 
  

  

  Date. 
  

  

  Time. 
  

  

  U. 
  

  

  tm. 
  

  

  Mean 
  

   Reading. 
  

  

  ST. 
  

  

  X'. 
  

  

  

  h 
  m 
  h 
  m 
  

  

  

  

  

  

  

  

  Dec. 
  17 
  

  

  4 
  40 
  to 
  7 
  5 
  p.m. 
  

  

  435 
  

  

  4-45 
  

  

  5-427 
  cm. 
  

  

  23-63 
  

  

  -42-0 
  mm 
  

  

  ./hour. 
  

  

  „ 
  18 
  

  

  3 
  20 
  — 
  6 
  10 
  , 
  

  

  427 
  

  

  4-50 
  

  

  4-921 
  „ 
  

  

  26-25 
  

  

  -35-6 
  

  

  ,, 
  

  

  

  6 
  40 
  — 
  7 
  55 
  „ 
  

  

  4-33 
  

  

  4-50 
  

  

  4-380 
  „ 
  

  

  29-78 
  

  

  -16-8 
  

  

  

  

  8 
  0— 
  9 
  35 
  „ 
  

  

  4-45 
  

  

  467 
  

  

  4-108 
  „ 
  

  

  31-90 
  

  

  + 
  2-8 
  

  

  

  n 
  >) 
  

  

  9 
  48 
  - 
  11 
  40 
  „ 
  

  

  4-57 
  

  

  4-90 
  

  

  4-071 
  „ 
  

  

  32-18 
  

  

  + 
  3-5 
  

  

  

  » 
  19 
  

  

  10 
  25a.m. 
  3 
  „ 
  

  

  4-40 
  

  

  4-60 
  

  

  4-558 
  „ 
  

  

  28-54 
  

  

  -25-7 
  

  

  

  

  6 
  0—7 
  50 
  „ 
  

  

  4-35 
  

  

  443 
  

  

  4166 
  „ 
  

  

  31-40 
  

  

  00 
  

  

  

  

  8 
  10 
  — 
  8 
  50 
  „ 
  

  

  4-36 
  

  

  4-40 
  

  

  3-905 
  „ 
  

  

  3360 
  

  

  + 
  36 
  

  

  

  cc 
  {) 
  

  

  = 
  45° 
  9'. 
  « 
  = 
  45° 
  10'. 
  

  

  The 
  analysis 
  of 
  water 
  from 
  the 
  cell 
  gave 
  the 
  following 
  

   result 
  : 
  

  

  5 
  cm. 
  3 
  water 
  from 
  the 
  cell 
  +15 
  cm. 
  3 
  water 
  gave 
  an 
  angle 
  

   of 
  polarization 
  of 
  4'. 
  This 
  gives 
  

  

  pW 
  gr./L 
  

   Att=0-17 
  atm. 
  

  

  C 
  1B 
  = 
  337*5 
  gr./l 
  . 
  nr 
  ' 
  = 
  31*57 
  atm. 
  

  

  Experiment 
  5. 
  

  

  Apparatus 
  put 
  up 
  Jan. 
  6, 
  1908. 
  

   G 
  = 
  40-00 
  gr./l. 
  at 
  12° 
  C. 
  

  

  Observations. 
  

  

  Date. 
  

  

  Time. 
  

  

  to. 
  

  

  tin. 
  

  

  Mean 
  

   Eeading. 
  

  

  7T. 
  

  

  X'. 
  

  

  Jan. 
  8 
  

   "» 
  9 
  

  

  h 
  m 
  h 
  m 
  

  

  11 
  45 
  a.m.— 
  2 
  10 
  p.m. 
  

  

  2 
  20 
  p.m.— 
  4 
  48 
  „ 
  

   6 
  „ 
  — 
  8 
  „ 
  

  

  12 
  5 
  „ 
  -2 
  15 
  „ 
  

  

  

   

   

   

  

  10-4 
  

   10-3 
  

   12-3 
  

  

  8-8 
  

  

  39-89 
  

   36-77 
  

   34-79 
  

   32 
  50 
  

  

  2-39 
  

   2-64 
  

  

  2-86 
  

   3-08 
  

  

  —8*4 
  mm./hour. 
  

   -5-2 
  „ 
  

   -0-5 
  

  

  +58 
  

  

  