7 '2 TABLE 40. 



VOLUME OF A CLASS VESSEL FROM THE WEIGHT OF ITS EQUIVALENT 

 VOLUME OF MERCURY OR WATER. 



If a glass vessel contains at / C, P grammes of mercury, weighed with brass weights in air at 

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



at the same temperature, /, : V= PR = P^> 

 at another temperature, / lf : V = PA\ = P pjd 1 1 + 7 (*i /) } 

 p = 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 /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. 



