( 101 ) 



This last point was ascertained first of all by a determination of 

 the boiling point lines, in which a maximum must occur. In both 

 cases this was found to exist and to be situated at the side of the 

 least volatile component, respectively chloral or aniline. 



The investigation of the three-phase lines showed first of all that 

 these possess the expected form in which two maxima and one 

 minimum of pressure occur. 



In the first system (Fig 1) CFD is the three-phase line, T and T, 

 are the respective maxima for the vapour pressure of solutions with 

 excess of either alcohol or chloral and saturated with chloralalco- 

 holate; the minimum is situated very close to the melting point F. 



In the second system (anilinehydrochloride Fig. 2) the first maxi- 

 mum, in presence of excess of HCl is situated at such an elevated 



Fig. 2. 



