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 f> 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 = P^f 



at another temperature, /i, : V = PR\ = Ppjd \ I + y (t\ t) \ 



p = 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 /C, 



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



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

 SMITHSONIAN TABLES. 



