V=PR =/^' 

 a 



If a glass vessel contains 2XfQ,P grammes of mercury, weighted with brass weights in air at 

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



at the same temperature, t, : 



at another temperature, h, : V = PRx = P pfd \\-\-1 {h- t)\ 

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

 weights, equals i gram ; 

 d = the density of mercury or water at z"" C, 

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



Table 4. 



II 



VOLUME OF A CLASS VESSEL FROM THE WEIGHT OF ITS EQUIVALENT 

 VOLUME OF MERCURY OR WATER. 



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

 Smithsonian Tables. 



