( G07 ) 



Chemistry. — "On a tetracom^jonent system with two liquid phases." 

 By Prof. F. A. H. Schreinem akers. 



(Communicated in the meeting of January 2G, 11)07). 



Although in the systems of three components with two and three 

 liquid phases there may occur many cases which have been predicted 

 by theory, but have not yet been realised by experiment, I have 

 still thought it would be as well to investigate a few systems with 

 four components to have a glance at this as yet quite unknown, 

 region . 



I will now describe more fully a few of those systems built up 

 from the substances : water, ethyl alcohol, lithium sulphate and 

 ammonium sulphate. 



We may represent the equilibria with the aid of a regular tetra- 

 hedron as in Fig. i; the angular points represent the four components : 



Li. 



A 



W 



m 



Fig. 1. 

 \Y = water, A = alcohol, Li = lithium sulphate, Am = Ammo- 



