Intelligence and Miscellaneous Articles. 



437 



liydrogon, are, on the contrary, soluble vvithout residue in sulphuret 

 of carbon. 



Whenever chemists have detected the production of different itso- 

 nieric states of sulphur, they have always been obtained by the ac- 

 tion of heat ; and no one had previously indicated the possibility of 

 the formation of one of these modifications under water. 



The sulphur insoluble in sulphuret of carbon is likewise so in 

 water, alcohol and sether ; it may be boiled in distilled water for a 

 long time without losing its property. When heated in an oil-bath 

 to about 220° in a glass tube, in which has been placed for compari- 

 son a piece of ordinary sulphur, it remains solid for some time after 

 the ordinary sulphur has melted ; but if the temperature be main- 

 tained between 220° and 248°, it is gradually modified, and fuses, 

 and now dissolves without residue in sulphuret of carbon. — Comptes 

 Ee?idus, March 17, 1851. 



CORRECTIONS IN MR. DRACh's PAPER, MARCH 1851. 



PHOTOGRAPHY. 

 To the Editors of the Philosophical Magazine and Journal. 



Gentlemen, 

 The following method of preparing positive photographic paper, 

 which I have not seen published in England, I have pursued with 

 considerable success ; its simplicity and efficacy appear to me to 

 render it worthy of notice. 



