J. L. Smith on a new Meteorite from Arkansas. 215 
improved by the modification lately devised by Prof. Gibbs, of 
dissolving the oxyd of mercury in the cyanid of mercury, (this 
ournal, Jan., 1865); but having every arrangement necessary 
h ; 
Se not yet tried Prof. Gibbs’s modification, but shall do so 
shortly. 
Chrome Iron.—This is found in small quantity in minute par- 
ing distinet faces of crystals, but I 
_ whose fo 
Beamee 106 eral: for this forinula: ih Which eonclasion 1 believe 
that I am sustaine mmelsberg and others. My results 
'nds of pyrites are correctly made out, then the meteoric va- 
nety has no terrestrial representative. : 
Hornblende-—This mineral is easi Y separated, and is of a 
_ Breenish gray color more or less soiled by iron ; with some care 
ican be detached unmixed with other constituents; it has a ver 
distinct cleavage in one direction and an imperfect one in an- 
t=) 
other; on analysis it gave 
: Bille st i See BETO 
Alumina, - - a = = - - 41:02 
Protoxyd of iron, ere oo - 16°49 
Protoxyd of manganese, ite qe os) 125 
toxyd of mang 3 
Magiivin. «3. ni 8 Ge ce. 20°81 
Alkalies—(potash, soda, lithia), - - -_ 24 
100¥1 ‘ 
The ox ygen relations of the silica and protoxyds furnish the 
formula # &.,—the formula of ee dents. In structure and 
be. Sufficient of it was wihel in a pure state for 
and was found to be composed as follows: e 
: ee 
Mine 6 eee 
€ was a minute quantity of manganese 1 
