48 
SALOON. 
Nat. Hist# 
( Case 47 and part of 48.) contain the ores of 
cobalt and arsenic. The crystals of glantz-cobalt, 
which has been frequently confounded with white 
cobalt, are mostly from Sweden ;—a suite of speci¬ 
mens of ivhite cobalt, exhibiting the principal mo¬ 
difications of crystallized and irregular shapes;— 
grey cobalt, principally from Wittichen in Wiir- 
temberg;—some specimens of oxides of this metal, 
viz. the black and the brown or yellow cobalt ochre, 
the latter of which contains iron ;—various speci¬ 
mens of the red cobalt ore, or arseniate, comprising 
the earth ( cobalt crust)' and the radiated ( cobalt 
bloom) varieties, from Saalfield, Allemont, &c. 
Between these and the remaining metallic sub¬ 
stances in the adjoining table-case are deposited 
the ores of arsenic ; native arsenic (formerly called 
testaceous cobalt) in reniform and botryoidal shapes, 
from Andreasberg, &c.;—splendid and instruc¬ 
tive specimens of the sulphurets of this metal, viz. 
the yellow orpirnent, massive, and in separable, 
striated, transparent laminae; and the red orpirnent 
or realgar, perfectly crystallized and massive, and 
also (in the large specimen in the centre) as colour¬ 
ing matter between the laminae of crystallized 
straight-foliated barytes ;—specimens of the native 
oxide of arsenic, showing the octohedral form of its 
primitive crystals. 
( Case 48.) The contents of this cas6 are :—The 
ores of nickel, among which may be particularized 
the 
