108 
LONG 
GALLERY. 
Nat. Hist. 
Case 15. Oooydulated iron or magnetic iron stone, 
massive and of various grain, compact, crystallized, in 
serpentine, chlorite-slate, &c.; ore which yields the 
wootz, a very hard kind of iron from the East Indies; 
magnetic iron-sand . 
Case 16. Hydrous oxide of iron or brown iron stone , 
among the most remarkable varieties of which species 
are: the micaceous, called goethite, in delicate trans¬ 
parent 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 varie¬ 
ties, such as the columnar, pisiform, reniform clay iron¬ 
stone, the meadow-ore, &c. 
Case 17. Oxides 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;—the ferruginous red oxide of 
copper or tile-ore , a mixture of red copper and brown 
iron ochre.— Oxide of lead: —the native minium from 
Hessia, (first described by Mr. Smithson,) from Siberia, 
&c.; all of them probably produced by the decomposi¬ 
tion of galena.— Oxide of bismuth , or bismuth ochre 
from Saxony and Bohemia.— Black and yellow earthy 
cobalt, or cobalt ochre, which seem to be hydrates "of 
the oxides of cobalt and manganese.— 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: amoncr the speci- 
mens of the former may be specified the greyish-white 
crystals 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 
