﻿628 
  

  

  Prof. 
  A. 
  S. 
  Eve 
  on 
  the 
  Amount 
  of 
  Radium 
  

  

  If 
  curves 
  are 
  plotted 
  which 
  show 
  the 
  variations 
  of 
  barometer 
  

   pressure 
  and 
  radium 
  equivalent, 
  it 
  is 
  found 
  that 
  the 
  fluctua- 
  

   tions 
  are 
  not 
  markedly 
  synchronous, 
  and 
  that 
  a 
  connexion 
  

   can 
  only 
  be 
  established 
  when 
  the 
  changes 
  of 
  pressure 
  are 
  

   exceptionally 
  large. 
  The 
  reason 
  for 
  this 
  has 
  already 
  been 
  

   indicated, 
  and 
  depends 
  upon 
  the 
  slow 
  rate 
  of 
  decay 
  of 
  

   radium 
  emanation 
  and 
  the 
  necessarily 
  long 
  period 
  of 
  each 
  

   experiment. 
  

  

  Series 
  1. 
  

  

  Date. 
  

  

  El 
  ectro- 
  1 
  

  

  scope 
  

   reading. 
  

  

  Less 
  

   " 
  rest 
  " 
  

   value. 
  

  

  Radium 
  

   grins. 
  xlO- 
  1 
  ? 
  

  

  Temp. 
  

   Fuhr 
  

  

  Bar. 
  

  

  ins. 
  

  

  Wind. 
  

  

  Rain 
  

   ins. 
  

  

  Remarks. 
  

  

  1907 
  

   July 
  13 
  

  

  19 
  

  

  25 
  

  

  •331 
  

   •383 
  

   •335 
  

  

  •081 
  

   •133 
  

   •085 
  

  

  417 
  | 
  

  

  68-6 
  \ 
  

   43-8 
  J 
  

  

  70 
  

  

  29-8 
  

  

  [ 
  

  

  3.W.J 
  

  

  

  Shallow 
  cyclones 
  

   & 
  thunderstorms. 
  

   1*8 
  inches 
  total 
  

   rainfall. 
  

  

  Aug. 
  1 
  

   6 
  

  

  •390 
  

   •373 
  

  

  •140 
  

   •123 
  

  

  72-2 
  

   63-4 
  ] 
  

  

  65 
  

  

  29-9 
  

  

  S.W 
  

  

  

  

  9 
  

  

  Mean 
  

   Oct. 
  17 
  

  

  •360 
  

   •419 
  

  

  •110 
  

   •169 
  

  

  56-6 
  

  

  51 
  

  

  301 
  

  

  s-w. 
  

  

  

  Anticyclone. 
  

  

  577 
  

  

  87-1 
  

  

  24 
  

  

  •331 
  

  

  •081 
  

  

  41-7 
  

  

  40 
  

  

  29-9 
  

  

  w. 
  

  

  1-2 
  

  

  

  31 
  

  

  •361 
  

  

  •111 
  

  

  57-3 
  

  

  35 
  

  

  30-2 
  

  

  N.W. 
  

  

  

  Anticyclone. 
  

  

  Nov. 
  5 
  

  

  •415 
  

  

  •165 
  

  

  85-1? 
  

  

  40 
  

  

  296 
  

  

  

  •63 
  

  

  

  11 
  

  

  Mean 
  

  

  •420 
  

  

  •170 
  

  

  87-6 
  

  

  37 
  

  

  29-8 
  

  

  w. 
  

  

  

  Heavy 
  rain 
  pre- 
  

   viously. 
  

  

  71-9 
  

  

  

  

  

  

  

  Series 
  

  

  2. 
  

  

  

  

  

  1907 
  

   Dec. 
  9 
  

  

  12 
  

  

  20 
  

  

  •880? 
  

  

  •617 
  

  

  •571 
  

  

  •43 
  

  

  •167 
  

  

  •123 
  

  

  108? 
  

   42 
  

   31 
  

  

  36 
  

   29 
  

   21 
  

  

  30-0 
  

   29-6 
  

   30-0 
  

  

  s. 
  

   w. 
  

   w. 
  

  

  0-5 
  

  

  Thaw 
  after 
  frost 
  

   and 
  snow. 
  

  

  Cyclone, 
  rain, 
  

   then 
  frost. 
  

  

  23 
  

  

  1-24? 
  

  

  ■79 
  

  

  198? 
  

  

  30 
  

  

  30-0 
  

  

  w. 
  

  

  0-35 
  

  

  

  26 
  

   Mean 
  

  

  •84 
  

  

  •39 
  

  

  98 
  

  

  27 
  

  

  29-7 
  

  

  s. 
  

  

  

  Cyclone, 
  some 
  

   snow. 
  

  

  952 
  

  

  

  