51 
crystallized barytes;—specimens of the native oxide 
of arsenic, showing the octohedral form of its pri¬ 
mitive crystals ; near which are placed, on account 
of their affinity to the other ores of arsenic, the va¬ 
rieties of pharniacolite, which is an arseniate of 
lime, and might therefore claim a place among the 
calcareous salts. 
{Case 48.) The contents of this case are:—The 
ores of nickel, among which may be particularized 
the native nickel from Saxony, which was formerly 
classed with the ores of iron, under the denomina¬ 
tion 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 crystallization of the same, produced by 
sudden cooling of the melted metal;— sulplmret of 
bismuth, the bismuth glance of Werner, with which 
is placed the Siberian needle ore of the same mine¬ 
ralogist, being a triple sulphuret of bismuth, lead, 
and copper.—Ores of Uran : the protoxide of ura¬ 
nium, called pitch ore, massive, pure and with ad¬ 
hering ochre of the same metal;—the oxide called 
2 iranmica or micaceous uran, on account of its fo- 
liaceous and thin laminar crystals, in beautiful 
groups of emerald.green and yellow colours. The 
ores of tellurium or sylvaiie, which are divided into 
native tellw'iuni, white and yellow (containing gold 
E 2 and 
SALOON. 
Nat. Hist. 
