( 448 ) 



ill this way, tiie reductions to 0^ for the gas whicli is outside tlie 

 reservoir at a temperalure of 20" and for a small i)art at the tem- 

 perature of the room, were carried out in tirst approximation. With 

 the three points which were thus found on the isotherm of 0^, the 

 virial coefiicients A a and Ba were then calculated also for tliis 

 temperature. 



From this follows Aa^, the value of jwa for (!=() by means of 

 the formula: 



Aa, — 1 — Ba, — Ca,- 



With the })ressure coefficient from 0^ C. for the state of Avogadro, 

 0.003G619 (cf. § 1 of Comm. NMOl^) follows for 2t)^ 

 Aa.,- = Aa, (1 -1- 0.0036619 X 20), 



