49 
(ia the large specimen in the centre) as colour¬ 
ing matter between the laminae of crystallized 
straight-foliated barytesspecimensofthenative 
oxide of arsenic , showing the octahedral form of 
its primitive crystals. 
(Case 48 .) The contents of this case are :— 
The ores of nickel, among which may be particu¬ 
larized the native nickel from Saxony, which was 
formerly classed with the ores of iron, under the 
denomination of capillary pyrites ;—the arsenical 
nickel , called copper nickel;— nickel ochre, which 
is no oxide, but an arseniate of nickel.—Ores of 
bismuth: native bismuth, massive, disseminated and 
dendritic in jasper; to which is added a specimen 
exhibiting the artificial crystallisation of thesame, 
produced by sudden cooling of the melted metal; 
-—sulphuret of bismuth , the bismuth glance of 
Werner, with which is placed the Siberian needle 
ore of the same mineralogist, being a triple sul¬ 
phuret of bismuth, lead, and copper.—Ores of 
uran , the protoxide of uranium, called pitch ore , 
massive, pure, and with adhering ochre of the 
same metal ;—the substance called uranite , or 
uran mica, (which, according to Berzelius, is no 
pureoxideof uran,but auranateof lime,) in groups 
of emerald-green and yellow colours. The ores of 
tellurium or sylvane, which are divided into native 
tellurium , white and yellow (containing gold and 
iron) ; the graphic ore so called on account of the 
disposition of its minute laminar crystals into 
groups that bear a distant resemblance to written 
characters ; and the black or Nagyag ore (com¬ 
monly alloyed with gold and some lead). 
e ( Case 
saloon 
Nat. Hist 
