﻿Expenditure 
  and 
  Food 
  Requirements 
  of 
  Women 
  Workers. 
  61 
  

  

  Table 
  II.— 
  Test 
  of 
  Douglas 
  Bag. 
  

   The 
  expired 
  air 
  was 
  collected 
  during 
  a 
  period 
  of 
  five 
  minutes 
  from 
  a 
  

   subject 
  sitting 
  on 
  a 
  chair. 
  Volume 
  31 
  - 
  41. 
  (corr.). 
  Samples 
  were 
  taken 
  from 
  

   the 
  bag 
  and 
  analysed 
  in 
  the 
  intervals 
  given 
  in 
  the 
  Table. 
  The 
  subject's 
  

   body-surface 
  area 
  was 
  T72 
  sq. 
  m. 
  (height 
  = 
  166"5 
  cm., 
  weight 
  = 
  64 
  kgrm.). 
  

  

  Analysis 
  of 
  Expired 
  Air. 
  

  

  Time. 
  

  

  co 
  2 
  . 
  

  

  o 
  2 
  . 
  

  

  N. 
  

  

  h. 
  

  

  

  

  1 
  

  

  2 
  ' 
  

   5 
  

   22 
  

  

  Per 
  cent. 
  

  

  iS}— 
  

  

  3-8711 
  o 
  . 
  o- 
  

   3 
  865 
  f 
  S 
  

   3 
  826 
  1 
  o 
  .00 
  

   3 
  -835 
  | 
  6 
  * 
  6 
  

  

  3 
  -474 
  / 
  3 
  47 
  

  

  Per 
  cent. 
  

  

  S3}"* 
  

  

  16 
  -90 
  } 
  16 
  89 
  

  

  Per 
  cent. 
  

   79 
  25 
  

  

  79 
  '33 
  

  

  79 
  -40 
  

  

  79 
  -42 
  

  

  79 
  64 
  

  

  The 
  following 
  table 
  shows 
  that 
  the 
  final 
  result 
  is 
  not 
  appreciably 
  affected 
  

   until 
  after 
  two 
  hours 
  from 
  the 
  beginning 
  of 
  the 
  experiment 
  : 
  — 
  

  

  

  

  

  

  Calories 
  of 
  heat 
  

  

  

  

  

  co 
  2 
  

  

  o 
  2 
  

  

  produced 
  

  

  per 
  hour. 
  

  

  

  Time. 
  

  

  E.Q. 
  

  

  eliminated 
  

  

  absorbed 
  

  

  Error. 
  

  

  

  

  per 
  min. 
  

  

  per 
  min. 
  

  

  

  

  

  

  

  

  

  Per 
  kgrm. 
  

  

  Per 
  sq. 
  m. 
  

  

  

  h. 
  

  

  

  c.c. 
  

  

  c.c. 
  

  

  

  

  Per 
  cent. 
  

  

  

  

  -93(7) 
  

  

  249-3 
  

  

  266 
  -1 
  

  

  1 
  23(9) 
  

  

  46 
  -15 
  

  

  

  1 
  

  

  0-91(4) 
  

  

  242 
  -3 
  

  

  265 
  -2 
  

  

  1 
  -24(4) 
  

  

  46-29 
  

  

  + 
  0-30 
  

  

  2 
  

  

  -89(4) 
  

  

  241 
  2 
  

  

  269 
  9 
  

  

  1 
  -24(4) 
  

  

  46-28 
  

  

  + 
  0-28 
  

  

  5 
  

  

  -88(8) 
  

  

  238 
  -6 
  

  

  268 
  -8 
  

  

  1 
  -21(5) 
  

  

  45 
  09 
  

  

  -2 
  30 
  

  

  22 
  

  

  -81(9) 
  

  

  216 
  

  

  263 
  7 
  

  

  1 
  -19(1) 
  

  

  44 
  32 
  

  

  -3 
  96 
  

  

  Table 
  III. 
  — 
  Comparison 
  of 
  Face 
  Mask 
  and 
  Mouthpiece. 
  

  

  

  Pulmonary 
  

   output, 
  

   litres 
  

   per 
  min. 
  

  

  Pulse. 
  

  

  Respira- 
  

   tion. 
  

  

  Analysis 
  of 
  

   expired 
  air. 
  

  

  C0 
  2 
  

   eliminated 
  

  

  °2 
  

  

  absorbed 
  

  

  E.Q. 
  

  

  Calories 
  of 
  heat 
  

   produced 
  jDer 
  hour. 
  

  

  

  

  co 
  2 
  . 
  

  

  o 
  2 
  . 
  

  

  per 
  min. 
  

  

  per 
  min. 
  

  

  Per 
  

   kgrm. 
  

  

  Per 
  

   sq. 
  m. 
  

  

  Mouthpiece 
  

  

  6 
  4 
  

  

  67 
  

  

  10 
  

  

  per 
  cent. 
  

   4 
  02 
  

  

  per 
  cent. 
  

   16 
  93 
  

  

  c.c. 
  

   258 
  -2 
  

  

  c.c. 
  

   248-9 
  

  

  0-99 
  

  

  1 
  -22 
  

  

  45-6 
  

  

  Face 
  mask 
  . 
  . 
  . 
  

  

  6 
  

  

  74 
  

  

  11 
  

  

  4-08 
  

  

  16 
  -67 
  

  

  241 
  9 
  

  

  257-9 
  

  

  0-94 
  

  

  1 
  -20 
  

  

  44-7 
  

  

  The 
  experiments 
  were 
  made 
  on 
  different 
  days. 
  The 
  subject 
  was 
  sitting 
  

   on 
  a 
  chair. 
  Subject's 
  body 
  surface 
  T72 
  sq. 
  m. 
  (weight 
  64 
  kgrm., 
  height 
  

   166'5 
  cm.). 
  To 
  save 
  space 
  only 
  two 
  of 
  six 
  similar 
  experiments 
  are 
  given. 
  

  

  