828 



From the more or less probable form of the solubility lines found 

 thus, we can then decide whether the assumed line of equilibrium 

 is more or less probable. 



Thus it has been assumed in figure 3 that the line of the equili- 

 brium S-y.'^S^ in sulphur chloride at 100° has the same form as 

 in toluene at 140°. 



This line is A B C in figure 3, the part ^ C is extrapolated, 

 except the point C. From this line we find for the solubility curves 

 at 25° DFF, at 0° G H I, at —60° KLM. 



The course of these solubility lines is very improbable. In the 

 first place, according to these lines the solubility of & in sulphur 

 chloride would be greatly enhanced by aStt, especially at — 60°. For 

 sulphide of carbon, in which Sy dissolves almost equally well as in 

 sulphur chloride, the solubility of S\ is, on the contrary, but little 

 increased by aS^^ (3"^ communication 2, 3, 4). It can, therefore, not 

 be accepted that by addition of S^, the solubility of Sy is so much 

 increased, as is drawn in figure 3. 



In the second place the points M, I and F, which indicate the 

 solubility of S-, in pure S^ at — 60°, 0°, and 25°, lie very close 

 together, and at a very great 6;.-content. 



This would mean that rhombic sulphur, even at — 60°, would 

 possess a solubility in S^ of 77 "/„. This, too, is improbable, because 



