52 
saloon, native oxide of arsenic, shewing the octohedrai 
Nat. Hist, form of its primitive crystals, near which are 
placed, on account of their affinity to the other 
ores of arsenic, the varieties of pharmacolite, 
which is an arseniate ol lime and might there¬ 
fore claim a place among the calcareous salts. 
(Case 48.1 The contents of this case are: — 
The ores of nickel, among which rnay be par¬ 
ticularized the native nickel from Saxony, which 
was formerly classed with the ores of iron, under 
the denomination of capillary pyrites ;—the arse¬ 
nical nickel, called copper nickel ; — nickel ochre, 
an oxyde of this metal, to which the chrysoprase, 
and the other substances found along with it 
(the pimelite and razumofskine) owe their green 
colour. Ores of bismuth : native bismuth, 
massive, disseminated and dendritic in jasper; to 
which is added a specimen exhibiting the arti¬ 
ficial crystallization of the same, 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 sulphuret of 
bismuth, lead and copper. Ores of Uran : the 
protoxyde of uranium, called pitch ore, massive, 
pure and with adhering ochre of the same metal; 
—the oxyde called uran mica or micaceous uran, 
on account of its foliaceous and thin laminar 
crystals, 
