434 C. L. Speyers — Molecular Weights of Liquids. 



chemically with respect to the anilin than concentrated ones 

 in amylene. Similarly for plot II at 8*1° and for plot III at 

 14*1° up to about 75 per cent grammolecules of anilin. From 

 that concentration on and at a temperature around and beyond 

 the critical temperature, the activity factor begins to diminish 

 again, indicating that pure anilin has a greater activity than 

 when in concentrated solutions in amylene. 



/CO 



Activity factor a > 



I at 0°, II at 8-1°, III at 14-1°, IV at 18-1°, V at 25\L°. 

 VI. In (C a H B ) 9 at 16-2°. 



At low concentrations, up to 15 per cent grammolecules of 

 anilin, a increases w r ith the temperature, in accordance with 

 what is stated after equation 4; but at high concentrations, so 

 long as two coexistent phases are present, the reverse is the 

 case, a diminishes as the temperature increases, which is in accor- 

 dance with what follows after 5. When the temperature rises 

 to 18*1° and the two coexistent phases disappear we lind a 

 increasing with the temperature so that in this concentrated 

 solution, 



dt ^ 



just as it would be for pure amylene. 



