190 



tliat even (hat con'es[)omliiig to a pressure of 50 ni.m. Hg. does not 

 reveal anything abont the existence of compounds in the liquid 

 phase ; there is nothing to be detected here of a constriction at tlie 

 place of the compounds, as was found by Dr. Aten M in his investiga» 



tion of the system sulphur-chlorine, and by Dr. de Leeuw ^) in the 

 system aldehyde-alcohol. 



Still more interesting is the consideration of the liquid lines of 

 the (/w)?'- sections, which are represented in fig. 4 for the tempera- 

 tures — 25°, — 30°, — 35°, — 45°, — 55°, — 65°, and — 70°. «) 



1) Z. f. phjs. Chem. 54, 55, (1906). 



2) loc. cit. 



3) The vapour phases of the mixlures need nol be investigated, as it appeared 

 from a preliminary investigation that they practically consisted only of NHg at 

 the examined temperatures, as was indeed to be expected a priori. 



