NATURAL HISTORY. 
GALLERY.] 
171 
beudantite, which latter is composed of the oxides of iron 
and lead. 
Case 16. Hydrous oxide of iron or brown iron-stone, 
among the most remarkable varieties of which species are, 
the micaceous, called gbthite, in delicate transparent 
tables of a blood red colour ; that in fine scales coating the 
cells of lava; a shining brownish-black variety used as hair 
powder by the Bootchuana natives beyond the Great River 
in South Africa; the fibrous brown iron-stone or brown 
hematite ; the compact and the ochrey brown iron-stone— 
and, as appendix to it, the argillaceous or clay iron-stone, 
with its many varieties, such as the columnar, the pisiform 
(pea-ore), the reniform, &c. 
Case 17. Oxide of copper:—red or ruby-copper 
compact, foliated, and fibrous; one of the more remark¬ 
able is the bright-red capillary variety from Rheinbreiten- 
bach (in which selenium has been discovered by Kersten), 
and from the Bank mines in Siberia;—the ferruginous 
red oxide of copper or tile-ore, a mixture of red copper 
and brown iron-ochre ; the black oxide or copper-black, ge¬ 
nerally mixed with the oxides of iron and manganese. 
—-Oxide of lead: —the native minium horn. Hessia (first 
described by Mr. Smithson), from Siberia, &c., probably 
produced by the decomposition of galena.— Oxide of bis¬ 
muth or bismuth-ochre, from Saxony and Bohemia. — Oxide 
of zinc or red zinc-ore from New Jersey, and the frank Unite, 
composed of the oxides of zinc and manganese.— Black and 
yellow earthy cobalt , both called cobalt-ochre, which seem 
to be hydrates of the oxides of cobalt and manganese, 
frequently mixed with oxide of iron.— Oxide of uranium, or 
uran-ochre, and the hydrous protoxide of the same, called 
pitch-ore . 
Case 18. Oxide of tin or tin-stone, divided by Werner 
into common tin-stone and wood-tin: among the speci¬ 
mens of the former (chiefly from Cornwall, Saxony, and 
Bohemia) may be specified the greyish-white crystals re¬ 
sembling scheel-ore or tungstate of lime, the regular and 
macled crystals, the pebble-like and granular tin-stone 
(shoad-tin, stream-tin, grain-tin, &c.), the columbiferous 
oxide of tin from Finbo in Sweden; a variety of fibrous 
oxide or wood-tin, composed of radiated-fibrous small glo- 
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