376 W. J. Taylor on Meteoric Iron from Mezico. 
No. 2 dissolved in niesiapentes acid, gave 
Iron, - 58°25 per cent. 
A residue Feira wittiok ainaclved after being a with 
hytndahlorie acid and chlorate of potash : it consiste 
Copper, : - 0°12 per cent. 
The remainder consisted principally of chromic iron, with a 
small portion of schreiber 
The specific gravity was arr to be 4822. 
The ratio of sulphur to the metals was ne i be 
Sulphur, 2°102, Tro 066, 
: Nickel and Cobalt, 0-245, | 2801 
It will be seen that the — corresponds with that of 
pytrhotine, considering its formula to be FeS, if we disregard 
the “si impurities which were found with it. 
meteoric iron was first treated in a flask with hydro- 
chlorie bas and the gas evolved was passed through a solution of 
ammonia chlorid of copper, but not a trace of sulphur could be 
detected i in this manner. 
In the fifth supplement to Rammelsberp’s Handworterbuch der 
chemischen Mineralogie, this meteoric iron is mentioned as pas- 
sive, experiments having been made by Prof. Wohler; but the 
piece belonging to Mr. Vaux is evidently active, throwing down 
metallic copper from a neutral solution of its sulphate. This 
ae was octane with great care with confirmatory Te- 
No. 1 was dissolved in hydrochloric acid, = : slight ee i- 
tate was obtained by hydrosulphuric acid, which on a 
examination before the bl nee 
a trace of tin. é blowpipe, was found to be seit wi 
Tron, - - - “ ‘ t. 
Nickel, - - - - pet ete 
Cobalt, “ “44. “ys 
Sehreiberit, Chromic i iron, be, 88 xp 
3 ‘95 e 
Pitan, - . - 1S 
oe 6 
The phosphorus was estimated i ortion which 
was first oxydized by nitrie acid on d fused ina in a platinum cruci- 
ble with carbonate of soda. 
o. 2 was dissolved in nitric acid. 
It gave, Iron, 90°37 per cent. 
ickel, 7.79 
Insoluble residue, 1-91 
100.07 
