60 
natural history. (Minerals.) 
[north 
and described by him in his Journal,) and that from the mountains 
separating the Quananger and Alten Fiords in the north of Norway. 
— Native lead, in lava : to which is added a medal cast in that metal as 
ejected by Vesuvius in 1631— Native bismuth, massive, disseminated, 
and dendritic, in jasper, kc. : to which are added, specimens exhibiting 
the artificial crystallization of the same, produced by the sudden cooling 
of the melted metal. — (In this case is also placed a specimen of arti¬ 
ficially produced titanium, crystallized in cubes, from the smelting 
furnace of the great iron works at Merthyr Tydvil in Wales.) 
Case 2. Native silver : among its varieties may be particularized 
those exhibiting the various forms in which it most frequently occurs, 
such as tooth-shaped, moss.like, wire-shaped, dendritical,branched, den¬ 
ticular, massive, &c., particularly from Kongsberg, Saxony, and the Hartz 
(the latter presented by His Majesty George IV.), many of which are 
aggregations of minute crystals.— Native mercu?y, and hydrarguret of 
silver or native amalgam ; the former chiefly as globules, disseminated 
in cinnabar, sparry limestone, &c. ; the latter crystallized in perfect 
and modified rhombic dodecahedrons, globular, kc., chiefly from 
Morsfeld and Moschellandsberg in the ancient Palatinate; (to which 
are added some figures and ornaments moulded and modelled 
i K amalgam, by the miners of Mexico.)— Native platinum , massive 
and as grains: rock specimens of the formation in which it occurs in 
the Ural, Siberia, &c. (a coin of the Siberian platina, struck at Peters¬ 
burg).— Palladium and osm-iridium in a wrought state. — The irite of 
Hermann, found as minute scales in hollows of large lumps of platina 
and in the platina sand of the Ural Mountains. 
Case 3. Native gold , subdivided into pure and alloyed gold; the 
former (though scarcely ever in absolute purity) is chiefly found 
massive, in detached crystals and as grains (in the alluvial deposits of 
Guinea, Sumatra, Bengal, Brazil, Leadhills in Scotland, &c.), also in 
brown iron-stone, in quartz, with needle-ore, &c., in Siberia;—the 
alloyed gold (principally from Transylvania) crystallized in minute 
cubes and octahedrons variously aggregated, in reticular plates, &c. 
Of the native alloys known by the names of electrum , that of Smeof or 
Schlangenberg, in Siberia, is best known: it is said to contain one-third of 
silver; but in general the two metals do not unite in definite proportions. 
In this Table Case begin (continued to Case 12)the electro-negative 
metallic substances called metalloids, and their non-oxidized combina¬ 
tions.— Tellurium and tellurets: the scarce native tellurium, which ele¬ 
ment (like sulphur and selenium) has the property of mineralizing several 
metals, combining vrith them as electro-negative substance, viz_with 
bismuth (a compound formerly called molybdena-silver) from Bastnaes : 
to which also belongs the tetradymite; — with silver (tellur-silber of G. 
Rose), from the Savodinsky mine, Altai, Siberia;—with lead ( foliated 
tellurium, or nagyagite) ;—with silver and lead (white and partly yellow 
tellurium, mullerineoi Beudant);—with silver and gold (graphic tellu¬ 
rium or schrift-ertz of authors; sylvanite, Haid.) all from Transylvania 
where they occur in veins traversing greywacke and porphyry.— Native 
antimony from Allemont, Dauphiny, and the scarce antimonial silver 
or stibiuret of silver from the Hartz, &c. 
Case 4. Native arsenic (formerly called testaceous cobalt and scher- 
ben-cobalt), in reniform and botryoidal shapes, from Andreasberg, kc.; 
