Table 4. 



II 



VOLUME OF A CLASS VESSEL FROM THE WEIGHT OF ITS EQUIVALENT 

 VOLUME OF MERCURY OR WATER. 



If a glass vessel contains at ^ C, /* grammes of mercury, weighted with brass weights in air at 

 760 mm. pressure, then its volume in c. cm. 



at the same temperature, i, : F'= PR = /^» 

 at another temperature, tx, : F = PRx = Fp/d i i + 7 (4 - ^) ! 

 / = the weight, reduced to vacuum, of the mass of mercury or water which, weighed with brass 



weights, equals i gramme ; 

 d =^ the density of mercury or water at t°C, 

 and 7 = 0.000 025, is the cubical expansion coefficient of glass. 



Taken from Landolt, Bornstein, and Meyerhofier's Physikalisch-Chemische Tabellen. 

 Smithsonian Tables. 



