202 Intelligence and Misceilanies. 
nated through the stone, and almost completely lining its 
cavities in little grains and semifused crystals, yet such is 
their minuteness, that it scarcely forms a more considerable 
ingredient than the meteoric iron. 
regular six-sided prism being known to be the fundamental 
form of the species. 
M, on M’,-. - = = + 120° 
c. 
° 
=] 
~~ 
' 
‘ 
‘ 
i 
' 
— 
Gr 
» 
oo 
S 
Cy on a, wi * 7 i 4 117.30. 
» Structure: cleavage imperfect. Brittle. Lustre steel 
like and splendent. Color stee] grey upon the erystalline fa- 
ces; copper yellow on fractured surfaces. Extremely sub- 
ject to tarnish, of which the steel blue and red form the most 
—— colors. 
ardness : not impressible by steel. 
flask was fitted with a tube dipping into a solution of ace- 
from their gangue, for the purpose of submitting them to trial before the 
blowpipe. Their intense green color reminded ats of malachite. 
