LONG 
GALLERY. 
Nat. Hist, 
1 IS 
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 copperred 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 uraniumf 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 crys¬ 
tals resembling scheel-ore or tungstate of lime, the 
regular and macled crystals, the pebble-like and granu¬ 
lar tin-stone (slioad-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, 
