830 



total sulphur contains only about 3 at. 7o of Sn at 100°, when the 

 equilibrium aSti^^ has been established. 



4^/. ^ 



The quantity of Sr., which is formed in sulphide of carbon, is 

 therefore much smaller than in sulphur chloride, and of the same 

 order of magnitude as in toluene. 



Chemical Laboratory of the University. 



Amsterdam, June 1917. 



