Intelligence and Miscellaneous Articles, 147 



rejected, because it yields metal of so bad quality that manufacturers 

 could not use it. A portion of the ore was sent to M. Berthier, who 

 gives the following account of it. Haidingerite has not yet been met 

 with in regular forms, but some cavities exhibit rudiments of prismatic 

 crystals, having the appearance of those of common sulphuret of anti- 

 mony : this new mineral occurs generally in confused laminated 

 masses, mixed with quartz, white ferruginous carbonate of lime, and 

 cubic pyrites. Its colour is iron gray, and its surface is frequently 

 covered with iridescent tints. It has generally less splendour than 

 sulphuret of antimony, without any shade of blue. It does not obey 

 the magnet. It has not been procured in pieces sufficiently pure to 

 admit of its specific gravity being ascertained. It readily melts be- 

 fore the blowpipe, and is quickly acted upon by cold muriatic acid, 

 and gives out pure sulphuretted hydrogen gas, and is totally dissolved, 

 except some pyrites and quartz • no sulphur is deposited. 



By analvsis • — taken the mean of several experiments, it yielded 



Sulphur 28-3 



Antimony 48*3 



Iron 14*9 



Zinc 00-3 



Sulphuret of Iron 03*2 



Quartz 032 



98*2 

 or independently of the gangue, it consists of 



Sulphur .... 30*3 or Sulphuret of Antimony 71*5 



Antimony . . 52'0 Protosulphuret of Iron .... 25*5 



Iron 16-0 Sulphuret of Zinc 005 



Zinc 00*3 



975 



98-6 

 Ann. de Chim. e.t de Phys. torn. xxxv. p. 351. 

 The above affords an excellent illustration of the complex views of 

 foreign chemists with respect to atomic composition. M. Berthier 

 considers it as composed of 

 18 atoms of Sulphur, or 4 atoms of Sulphuret of Antimony. 



4 atoms of Antimony, 3 atoms of Protosulphuret of Iron. 



3 atoms of Iron. 



Adopting the simpler views generally entertained in this country, 

 the mineral in question is constituted of 

 3 atoms of Sulphur or 2 atoms of Sulphuret of Antimony 120 

 2 atoms of Antimony I atom of Protosulphuret of Iron 44 



1 atom of Iron 



164 

 — Edit. 



BROMIDE OF SELENIUM*. — BY M. SERULLAS. 



Selenium combines with bromine in several proportions ; but five 

 parts of the former and one part of the latter appear to form the most 

 intimate compound. To obtain bromide of selenium, the latter in 



U 2 powder 



