184 



This result is expressed in Fig. 1. 

 From this T-X fig. follows : 

 for the point of solidification of the compound 2 NHg.H^O — 78°. 9. 

 „ ,, ,, ,, ,, ,, ,, ,, JNrlj.HjU iv .U. 



Further the eutectic point of NH, -j- 2 NHj.H^O + ^^ appears to lie 



at 81.4% NH3 and —92.5°. 

 „ of 2NH3.H,0 + NH3.H,0 + Lappearsto 

 lie at 58.5 7„ NH3 and — 86.0°. 



„ ,, „ ,, of NH3.H2O + HjO -f- L appears to lie 



at 34.7 NH3 and —100.3°. 



Great difficulties were experienced in the case of the mixtures 

 with less than 507o NH3, in consequence of the great viscosity of 

 these mixtures at low temperature. 



Shortly after our just mentioned preliminary communication a 

 treatise on the same subject by Rupert 'j appeared in Journ. Am. 

 Chem. Soc. 31 866 (Aug. 1909). 



1) Further communication Journ. Am Ghem. Soc. 32. 748 (1910). 



