51 
ing matter between the laminae of straight-foliated 
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 phannacolite^ which is an arseniate of 
limCj 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 he particularized 
th-e native nickel from Saxony, which was formerly 
classed with the ores of iron, under the denomina¬ 
tion of capillary pyrites;—tlie arsemcal 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;— sidphuret 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 
uran mica 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 sylvane, which are divided into 
E 2 native 
SALOON. 
Nat. Hist. 
