IO2 



TABLE 78. 

 VELOCITY OF SOUND IN LIQUIDS AND CASES, 



For gases, the velocity of sound = "VyP/p, where P is the pressure, p the density, and y the ratio of specific heat at 

 constant pressure to that at constant volume (see Table 265). 



NOTE : The values from Ammonia to Methane inclusive are for closed tubes. 

 SMITHSONIAN TABLES. 



