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 t C, 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, : V = PR = Py 

 at another temperature, /i, : V = PR\ = P fid \ i + y (t\ - /) ( 

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



weights, equals i gram ; 

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

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



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

 SMITHSONIAN TABLES. 



