* 
334 Chemical Analysis of Meteoric Iron. 
the peroxide of iron was thrown down by means of liquid ammo- 
nia. When the precipitate had subsided, the whole was thrown 
on a filter, and the peroxide of iron was thoroughly washed, 
dried, ignited in platina capsule, and weighed = 23.5 grs. perox- 
ide of iron = 16.296 ers. metallic iron. 
The solution, which had passed the filter, was of a clear blue 
color, with a slight amethystine tint, indicative of nickel. 'This 
solution and the mingled washings were evaporated in a glass ves- 
sel to a small bulk, and then treated, while warm, with a hot so- 
lution of pure potash, when a dense bulky green precipitate of the 
hydrate of nickel was thrown down, which being collected on a 
filter, washed, thoroughly dried and ignited in a platina crucible, 
weighed 8.8 grains = oxide of nickel = 6.927 grains metallic nickel. 
Analysis—2d specimen. A fragment of the meteorite, weigh- 
ing 50 grains, was found to have a sp. gr. = 6.500. 
It was placed in a green glass flask,—perfectly pure nitric acid 
was poured upon it, and heat was gradually applied until the 
solution was completed. It was then diluted with pure distilled 
water, and a solution of nitrate of silver was added, when an 
abundant curdy white precipitate of chloride of silver took place. 
When the operation was complete, I filtered the solution, col- 
lected the washed chloride of silver, and dried and fused it in a 
small porcelain capsule. It weighed=3 grains=chloride of sil- 
ver =0.74 gr. chlorine, or 0.76 hydro-chloric acid. 
The solution was then cleared of nitrate of silver, by means of 
hydro-chloric acid, and filtered. Then muriate of ammonia being 
added, the peroxide of iron was precipitated by pure ammonia, 
and after washing, drying, and ignition, weighed = 48 grains = 
33.28 grs. metallic iron. 
The oxide of nickel was precipitated by means of a solution of 
pure potash, and when collected, washed, dried, and ignited, 
weighed 15.8 grains oxide of nickel =31.6 per cent. = 24.708 per 
cent. metallic nickel. After the separation of the metallic oxides, 
the solution was treated by means of a solution of acetate of ba- 
Tytes, and a white precipitate of sulphate of barytes was formed, 
which weighed, after washing and drying, = 27 grains = 2 g15- 
sulphur. 
The ‘presence of chrome and of manganese having been indi- 
cated, a took a separate portion of the meteorite, weighing 10 
rains, dissolved it in hydro-chloric acid, adding sufficient tal- 
taric acid to retain the oxides in solution, neutralized the acid 
