48 
saloon, feld, Allemont, &c. Between these and the re- 
iv at. hist, maining 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 colour¬ 
ing matter between the laminae of crystallized 
straight-foliated heavyspar;—specimens of the 
native oxide of arsenic , showing the octahedral 
form of its primitive crystals. 
Case 48. The contents of this case are 
The ores of nickel, among which may be parti¬ 
cularized the native nickel from Saxony, which was 
formerly classed with the ores of iron, under the 
denomination 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 speci¬ 
men exhibiting the artificial 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 sul- 
phuret of bismuth, lead, and copper.—Ores of 
uran ; 
