48 
SALOON. —specimens of antimonial ochre on native and 
Nat. Hist, grey antimony, &c. 
Case 47, and part of 48, contain the ores of 
cobalt and arsenic. The crystals of glantz-co- 
balt^ which has been frequently confounded with 
white cobalt, are mostly from Sweden ;—a suite 
of specimens of white cobalt, exhibiting the prin¬ 
cipal modifications of crystallized and irregular 
forms ; grey cobalt, principally from Wittichen 
in Wiirtemberg;—some specimens of oxides of 
this metal, viz. the black and the brown or yel¬ 
low cobalt ochre^ the latter of which contains 
iron ; various specimens of the red cobalt ore^ 
or arsenite, comprising the earthy (cobalt crust) 
and the radiated (cobalt bloom) varieties from 
Saalfeld, Allemont, &:c. Between these and the 
remaining metallic substances in the adjoining 
table-case are deposited the ores of arsenic ; na- 
tive arsenic (formerly called testaceous cobalt) 
in reniform and botryoidal shapes, from Andreas- 
berg, &c.;—splendid and instructive specimens 
of the sulphurets of this metal, viz. the yellow 
orpiment^ massive, and in separable, striated, 
transparent laminae ; and the red orpiment or re¬ 
algar, perfectly crystallized and massive, and 
also (in the large specimen in the centre) as co¬ 
louring matter between the laminae of crystal¬ 
lized straight-foliated heavyspar ;—specimens of 
the native oxide of arsenic, showing the octahe¬ 
dral form of its primitive crystals. 
Case 48. The contents of this case are:— 
The 
