210 Mr. Howard’s Experiments and Observations 
the globules belonging to the stones said to have fallen on the 
earth. 
EXAMINATION OF THE IRON FROM SOUTH AMERICA. 
I have already observed, that my experiments coincided with 
those of Mr. Proust. He obtained 50 grains of sulphate of 
nickel, from 100 of this mass. The process I have so frequently 
mentioned, yielded me 80 grains of oxide of iron from 62 of 
the metal; which indicates about 7-J of nickel, or about 10 per 
cent. 
EXAMINATION OF THE SIBERIAN IRON. 
100 grains of this iron, gave 127 of oxide of iron : hence, it 
should contain about 17 per cent, of nickel. 
The yellow substance belonging to this iron, was analyzed 
in the same way as the globular bodies, and the earthy parts, 
of the stone from Benares. 
The proportions, resulting from the analysis of 50 grains, 
and from some previous experiments on other particles, were. 
Silica 27 
Magnesia - - - igi 
Oxide of iron - - - 8^ 
Oxide of nickel 4- 
4 9b 
EXAMINATION OF THE BOHEMIAN IRON. 
26- grains of this metal, left about i\ grain of earthy matter, 
insoluble in nitric acid ; and, by ammonia, afforded 30 grains 
of oxide of iron, inducing an estimation of nearly 5 of nickel. 
