44 
saloon, oxides of iron, comprehending Werner’s ochrey 
Nat. Hist, and compact brown iron stone, and brown hema¬ 
tite, together with several varieties of argillaceous 
or clay iron stone, such as common, columnar, 
pisiform, reniform clay iron stone, meadow ore, 
&e.—Spathose iron ore, or carbonate of iron, the 
primitive form of which has lately been ascertain¬ 
ed, by Dr. Wollaston, to be different from that 
of carbonate of lime: crystallized, massive, in 
combination with other substances, 
(Case 40.) Contains the remaining ores of iron 
and those of manganese, a metal which stands in 
close geognostical relation with iron.—Arseniate' 
of iron, which occurs only crystallized, chiefly in 
cubes, whence Werner’s name of cube ore.—Chro¬ 
mate of iron, among the specimens of which is 
one from Baltimore, in which this substance is in¬ 
termixed with talc coloured purple by chromic 
acid.'—Phosphate of iron : among the specimens 
here preserved, which belong to the blue iron 
earth of Werner (supposed by some to be native 
Prussian blue), are, the massive variety from 
New Jersey, and several pulverulent varieties, 
in clay, wood, peat, &c.—With these is placed, 
provisionally, the turquois, a gem which has 
lately been considered, by Bouillon la Grange, 
as bone penetrated by phosphate of iron: the 
genuine turquois, however, from Chorazan, in 
Persia, 
