118 
LONG 
GALLERY. 
Nat. Hist. 
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 varie¬ 
ties, such as the columnar, pisiform, reniform clay iron¬ 
stone, the meadow-ore, &c. 
Case 17. Oxide of copper:—red or ruby copper ore, 
compact, foliated, and fibrous ; one of the more remark¬ 
able is the bright-red capillary variety from Rhein- 
breitenbach in Nassau, and the Bank mines in Siberia; 
—the ferruginous red oxide of copper or tile-ore, a mix¬ 
ture of red copper and brown iron ochre; black oxide 
or copper black, generally mixed with the oxides of 
iron and manganese.— Oxide of lead:—the native mi¬ 
nium from Hessia (first described by Mr. Smithson), 
from Siberia, &c. probably produced by the decomposi¬ 
tion of galena.— Oxide of bismuth, or bismuth ochre 
from Saxony and Bohemia.— Oxide of zinc or red zinc 
ore from New-Jersey.— 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 tinstone, divided by Werner 
into common tin-stone and wood-tin: among the speci¬ 
mens of the former (chiefly from Cornwall, Saxon}% 
and Bohemia) may be specified the greyish-white crys¬ 
tals resembling scheel-ore or tungstate of lime, the 
regular and macled crystals, the pebble-like and granu¬ 
lar tin-stone (shoad-tin, stream-tin, grain-tin, &c.), the 
columbiferous oxide of tin from Finbo in Sweden; 
fibrous oxide or wood-tin, a variety of which, composed 
of radiated-fibrous small globules, and marked with 
concentrically disposed brown and yellow colours, is 
Called toad’s eye wood-tin. 
In the next Case begin the oxides of electro-nega- 
tive bodies, and their various combinations. 
Case 19. Alumina and Aluminates . To the former 
belongs the corundum, comprehending the precious 
stones, commonly called oriental gems, (the sapphire, 
ruby, 
