MancJiesier Mejuoirs, Vol. Hi. (1907), A'^^. 12. 7 



(It) At a temperature pf lod" C. 



When stibine was passed over tellurium kept at a 

 temperature of ioo°C., the lead paper was distinctly 

 stained after the prolonged passage of the gas, and the 

 stains were not removed by hydrochloric acid. 



(r) /;/ tJic dark. 



In a similar manner, stibine was passed over tellurium, 

 but in the dark and at the ordinary temperature no 

 reaction took place. 



The results of the investigation, including those of 

 the previous paper in which sulphur was used, may be 

 tabulated as follows : — 



/// sniih'jihi. 



In the previous paper I pointed out that the facility of 

 the decomposition of the hydrides of phosphorus, arsenic, 

 and antimony by means of sulphur when exposed to light, 

 increased with the rise in the molecular weight of these 

 gases, phosphine being very slowly decomposed, arsine 

 more rapidly, and stibine very rapidly. Similarly, it is now 



