582 
to 125°, 100°, 75° and 50° and the solubility determined at 25°. 
The values found are given in table II. 
From the line of 125° we see, still more distinctly than from 
that at 100°, that this proceeds towards 100 at. °/, 5 in accordance 
with the line deduced in case a new modification is formed. 
No experiments could be carried out with quantities of sulphur 
larger than indicated in the table. Not at 50° and 75° because the 
liquid at these temperatures was not homogeneous. Not at 100° and 
125° because the liquids rich in sulphur are very viscous and, there- 
fore, cannot be separated from the crystals by centrifugal action. 
The line drawn for 25° has not been determined experimentally , 
but has been found by extrapolation of the values at 50°, 75°, 100° 
and 125°. We notice from this line that even at 25° a considerable 
amount of the new sulphur form must be present. A comparison of 
the lines for 25°, 50°, 75°, 100° and 125° shows that the quantity 
of the new modification increases at a higher temperature and that 
this increase for each 25° difference, is greatest below 100°; from 
100° to 125 the solubility increases but little. For this reason, when 
the liquids are heated at 175°, we find but a small increase in 
solubility, as shown by the two points drawn in Fig. 5. We must, 
however, bear in mind that at 175°, the equilibrium will not be 
tixed. If such were the case a somewhat greater solubility would 
have been found. 
The existence of a new modification of sulphur, has not, however, 
been proved with absolute certainty by the course of the lines in 
Fig. 5. It might yet be possible that a compound was formed very 
rich in sulphur, such as §,,. 5, Cl, which contains 94 at °/, of 
sulphur. In such case the existence of these liquids rich in sulphur 
would be explained. The line in Fig. 5 then ought not to proceed 
in the extrapolated part towards 100 at. °/, of 5, but turn to the 
right and attain say at 96 or 98 at. °/, of 5 their limitation value. 
That, however, a new modification is actually formed is shown 
in the following manner. 
When in mixtures of sulphur and sulphur chloride a new modi- 
fication is formed on heating, this must also be the case with pure 
sulphur although perhaps in smaller quantities than in mixtures with 
S,Cl,. Moreover it may be — and there is reason to suppose so — 
that the conversion of the new modification into S:, or reversely, 
proceeds more rapidly when no or little $,Cl, is present. This might 
be the reason why the formation of that new modification in pure — 
sulphur could not be demonstrated. 
