﻿32 
  

  

  W. 
  G. 
  Mixter 
  — 
  Color 
  imetry 
  by 
  Combustions 
  

  

  The 
  apparatus 
  shown 
  in 
  fig. 
  3 
  is 
  designed 
  for 
  use 
  in 
  a 
  room 
  

   of 
  varying 
  temperature. 
  A 
  is 
  made 
  of 
  very 
  thin 
  tinned 
  iron 
  

   (sheet 
  tin) 
  or 
  tin 
  foil, 
  and 
  B 
  is 
  a 
  copper 
  tank, 
  holding 
  in 
  the 
  

   annular 
  space 
  about 
  20 
  liters 
  of 
  water. 
  It 
  is 
  tinned 
  omthe 
  sur- 
  

   face 
  opposite 
  x\, 
  and 
  has 
  one 
  hole 
  in 
  the 
  top 
  for 
  the 
  stirrer, 
  

   one 
  for 
  a 
  thermometer 
  and 
  another 
  for 
  adding 
  water. 
  The 
  

  

  Fig. 
  3. 
  

  

  c^> 
  

  

  7F 
  

  

  calorimeter 
  can 
  E 
  is 
  supported 
  by 
  the 
  wooden 
  ring 
  F. 
  The 
  

   cover 
  C 
  is 
  made 
  of 
  two 
  semi-circular 
  pieces 
  of 
  wood. 
  The 
  

   wooden 
  parts 
  are 
  varnished 
  with 
  shellac. 
  The 
  rod 
  D 
  rests 
  in 
  

   a 
  cup 
  and 
  is 
  inclined 
  about 
  an 
  inch 
  so 
  that 
  the 
  propeller 
  will 
  

   give 
  a 
  rotary 
  motion 
  to 
  the 
  water. 
  The 
  bulb 
  G 
  is 
  for 
  collect- 
  

   ing 
  gas 
  that 
  may 
  be 
  given 
  off 
  in 
  an 
  experiment. 
  It 
  has 
  a 
  

   capacity 
  of 
  500 
  to 
  700 
  cc 
  and 
  is 
  connected 
  with 
  the 
  bomb 
  by 
  x 
  a 
  

   small, 
  thick-walled 
  rubber 
  tube 
  and 
  with 
  H 
  by 
  a 
  large 
  rubber 
  

   tube. 
  Both 
  rubber 
  tubes 
  should 
  be 
  securely 
  fastened 
  by 
  wir- 
  

   ing. 
  The 
  lower 
  stop-cock 
  is 
  large 
  so 
  as 
  to 
  allow 
  the 
  water 
  to 
  

   flow 
  rapidly 
  between 
  the 
  bulbs. 
  If 
  the 
  room 
  and 
  apparatus 
  are 
  

   colder 
  than 
  desired 
  the 
  latter 
  may 
  be 
  warmed 
  by 
  a 
  lamp 
  flame 
  

  

  