214 J. L. Smith on a new Meteorite from Arkansas. 
pecifie gravity taken on different pieces varies from 4 5 to 61. 
By mechanical means and the aid of the magnet the following 
minerals were separated. 
Nickeliferous iron, Hornblende, 
Chrome iron, ivine, 
Sulphuret of iron, Carbonate of Lime. 
ickeliferous Iron.—I may as well mention the manner 1n 
times. The iron is then introduced into an iron, or, better still, a 
silver capsule or crucible, and a strong solution of potash added, 
heat is applied until all the water is driven off, and the residue 
is heated to redness; on cooling, water is applied and the excess 
of potash washed out, as well as some silicate of potash that is 
formed. After thoroughly washing the particles of iron, they are 
moistened with a little alcohol and dried on blotting paper with 
a gentle heat; and by holding a magnet a little distance from 
m, the particles of iron will adhere to the magnet almost per- 
fectly free from earthy matter. : 
The iron, if of a coarse reticulated structure, as the one In 
question, may require to be crushed in the steel mortar after 
treatment by potash, to detach particles of silicate, remaining in 
lees, and in this variety I sometimes repeat the treat- 
ment by potash. In this wa , the foreign matter associated with 
the iron can be reduced to one-half percent. Of course this pro- 
cess sacrifices more or less of the iron, especially if the iron be 
in very sinall particles; but this sacrifice is of secondary import- 
ance compared wit the necessity of having the metallic matter 
ina oe state. Thus purified the iron was found to be com- 
toned of 
Wg 
Phosphorus, { t° small to be estimated. 
ae 
eon 
tr ne 99515 
In the analysis, after separating the iron by the acetate of 
—_ nickel and cobalt were separated by nitrite of potash, 
Liebi ey eee used seny. and with the best results. 
+ 
Ses yO es Ses rat are ee Seti a) aR es FEL a2 
g the same end has been much | 
