﻿MECHANICAL 
  ACTION 
  OF 
  HEAT. 
  

  

  589 
  

  

  Gases. 
  

  

  Experimental 
  Data. 
  

  

  Theoretical 
  Results. 
  

  

  Velocity 
  of 
  Sound 
  at 
  0° 
  Cent. 
  

  

  PV 
  at 
  0° 
  C. 
  

   Kegnault. 
  

  

  Regn. 
  

  

  K 
  p 
  

  

  K 
  p 
  -K 
  v 
  

  

  K 
  v 
  

  

  K 
  p 
  ^-K 
  v 
  

  

  By 
  Theory. 
  

  

  By 
  Obser- 
  

   vation. 
  

  

  Observers. 
  

  

  Air, 
  . 
  . 
  f 
  

  

  Feet. 
  

   26214-4 
  

  

  0-2379 
  

  

  Feet. 
  

  

  330-6 
  

  

  Feet. 
  

  

  96-0 
  

  

  Feet. 
  

  

  234-6 
  

  

  1-4094 
  

  

  Ft. 
  per 
  sec. 
  

   1090-4 
  

  

  Ft. 
  per 
  sec. 
  

  

  1090-5 
  

   1090-1 
  

  

  Bkavais 
  & 
  Martins. 
  

   Moll 
  & 
  Van 
  Beek. 
  

  

  Oxygen, 
  . 
  . 
  

  

  23710-4 
  

  

  3-2182 
  

  

  303-2 
  

  

  86-8 
  

  

  216-4 
  

  

  1-4014 
  

  

  1036-4 
  

  

  1042-3 
  

  

  DULONG. 
  

  

  Hydrogen, 
  

  

  378819-0 
  

  

  3-4046 
  

  

  4731-0 
  

  

  1388-0 
  

  

  3343-0 
  

  

  1-4150 
  

  

  4153-3 
  

  

  4165-1 
  

  

  DuLONG. 
  

  

  Carbonic 
  oxide, 
  

  

  27097-8 
  

  

  0-2479 
  

  

  344-5 
  

  

  99-25 
  

  

  245-25 
  

  

  1-4047 
  

  

  1106-8 
  

  

  1107-0 
  

  

  DuLONG. 
  

  

  Carbonic 
  acid, 
  

  

  17144-7 
  

  

  0-2169 
  

  

  300-7 
  

  

  64-2 
  

  

  236-5 
  

  

  1-2714 
  

  

  837-55 
  

  

  858-28 
  

  

  DuLONG. 
  

  

  The 
  real 
  specific 
  heat 
  of 
  carbonic 
  acid 
  gas 
  is 
  235*5 
  feet 
  of 
  fall 
  per 
  centigrade 
  

   degree. 
  That 
  of 
  the 
  other 
  giises 
  does 
  not 
  differ 
  from 
  the 
  apparent 
  specific 
  heat 
  

   at 
  constant 
  volume 
  by 
  an 
  amount 
  appreciable 
  in 
  practice. 
  

  

  VOL. 
  XX- 
  PART 
  IV 
  

  

  7u 
  

  

  