40 
saloon, mispikel), the sulphurets of iron, viz. the common 
Nat. Hist, pyrites smooth and striated; the radiatedpyrites, 
a substance very subject to decomposition,and to 
which belong most of the varieties of what is com¬ 
monly called lenticular and coxcomb pyrites, as 
also the globular pyrites of a radiated texture. 
Case 37. Sulphurets of iron continued :— 
The hepatic or liver pyrites of Werner, very dis¬ 
tinct from what French mineralogists call fer 
sulfure hepatique, which latter is decomposed 
common and radiated iron pyrites, and sometimes 
brown iron stone.— Magnetic pyrites , which is 
nearly allied to the preceding species : massive 
and crystallized in six-sided prisms.—The re¬ 
mainder of this table-case is occupied by part of 
the oxides of iron : magnetic iron-stone massive, 
of various grain, compact, crystallized, in serpen¬ 
tine, chlorite slate, &£.; ore which yields the 
wootz , a very hard kind of iron from the East 
Indies; magnetic iron-sand; the variety ofox- 
idulous iron with admixed manganese and zinc, 
called franklinite , from New York, &c. 
Case 38, and part of 39. Oxides of iron 
continued : specimens of specular iron , or iron 
glance, among which those from the island of 
Elba are remarkable on account of their beautiful 
iridescence and play of colours ; variety in large 
laminar crystals, appearing like polished steel, 
from Stromboli, &c.; the micaceous iron ore of 
Werner, belonging partly to this species, partly 
to the scaly red and brown iron-stone (in the 
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