95 
compound is not formed. The following figures give an idea of the 
course of such an experiment. 
A porcelain boat with 3,09 grammes of P, was placed in a 
porcelain tube, which was open on one side, and was connected 
there with the oil-pump. The tube was heated in an electrical oven 
(thermo-element on the outside of the tube). 
Time Temp. Pressure 
det) 620° 1,5 maass 
Dal 840 tre va Ea 
3.45 910 ERNI wa Be eos 
5.10 1010 Sd | Reale Weta es 
bh. AS 900 2 eN 
Left to cool with evacuation; the sulphur-content of the thus 
obtained product P, was 1.94 °/,. 
2.38 grammes of P, heated anew in vacuum: 
11.15 400° 1 mm. 
2 940 dte, 
3 980 1 aR 
+ 1030 1.5 mm. there still arise traces of H,S. 
5 1060 beets 
6.10 990 1 # 
Left to cool with evacuation. The product P, thus obtained contains 
1,87 °/, of sulphur. 
It appears from these experiments that the sulphur content 
of P, decreases very little by prolonged heating at about 1000° 
C. and 1.5 mm., the decrease of the last experiment lies near 
the limit of the errors of the analysis. The total analysis of the 
preparation P,, which had been dried at 600° and 2 mm. for an 
hour gave: 0.27 °/,. ash, 96.1°/, C, 0.33°/, H, 2.00 */, ‘sulphur, 
together 98.70 °/,. 
Besides absorbed water this preparation contains, therefore, still a 
hardly appreciable quantity of hydrogen. 
§ 3. Behaviour towards oxidizers and towards hydrogen. In order 
to get a better insight in the nature of this compound of carbon 
and sulphur the behaviour of this preparation towards oxidizing and 
towards reducing agents was examined. 
2 grammes of P, were shaken with 100 ec. of water and 3 cc. 
of bromine for four hours on the shaking apparatus at the ordinary 
temperature. After this operation 3.6 mgr. of sulphur was oxidized 
