12 P. T. Cleve, 



Spec. Grav: 



0.8779 gram, coarse pieces, t" lo.^ö sp. Gr. 2.739 



1.2829 » » » » » » )) 2.744 



Mean of the two determinations: 2.742. 

 Molecular volume: 269.5. 



Bromoaurate of samarium 



SmBr3 + AuBr3+ lOH^O. 



This compound crystallises in large, brillant and well formed thick 

 rhombic tablets of a brown, almost black, colour. It is very deliquescent. 



1.2964 gram gave 0.6340 gram, Au + SmjSSO^, which left after 

 washing with water 0.2527 gram Au. 



0.8427 gram was treated with sulphurous acid and gave 0.1633 gram 

 Au and 0.9176 gram AgBr + 0.0186 gram Ag. 



In percent: 



Calc 



Sm 15.04 — loO 14.91 



Au 19.49 19.38 196 19.48 



Br — 47.98 480 47.72 



H.O - — (17..55) 180 • 17.89 



1006 100.00 



Sm^SSO^ + Au. . 48.90 48.71 



Spec. Grav: 



0.8903 gram, coarse pieces of crj'stals, t" 21°2 3.383 

 0.9726 » » » » » » » 3.398 



Mean of both determinations: 3.390. 



Molecular volume: 296.7. 



Ferrocyanide of samarium and potassium 



SmKFeeCN + SHsOCorSH^O dried at 100°). 



A solution of ferrocyanide of potassium yields with nitrate of 

 samarium a light coloured, dirty yellowish, finely divided and non-cry- 

 stalline precipitate which, on washing, passes through the filterpaper. 

 The precipitate was dried in the air and then analysed. 



