J. L. Smith on the Colorado Meteorite, 219 
e mass of iron is accompanied with the ft label : 
“Meteoric iron found in Russel Gnlch, Feb. 18, 1 r, 
Otho Cu rtice. Weight 29 lbs. Brought to pe ak Feb. 
1864.” 
The mass measures in its extreme length, breadth, and igi 
ness, 8$ 74X53 inches. It is perfect in all parts except at on 
extremity, and, as stated above, weighs 29 lbs. 
his iron is one of medium ‘hardness, with the deneity, 772; 
and when cut through was found to contain a few small nodul 
of iron pyrites. It is attacked readily by nitric acid, i gives 
bold Widmannstittian figures without very sharp angles. It re- 
sists the action of the air and moisture very well, and is conse- 
quently but little altered on the surface. No siliceous minerals 
could be traced in any of the crevices. On analysis its compo- 
sition was found to be— 
Tron, - - - - 90°61 
Nickel, - - - - 7°84 
Cobalt, - - - - ‘78 i 
Copper, - : - ‘ minute quantity. 
Phosphorus, - - - 02 
99°26 
Ihave not made any further observations in relation to the 
présence of copper in meteoric iron since , when I called 
attention to it. Since then I have me more confirmed in 
the opinion, then first expressed, that copper would be found in 
all meteoric irons; this has been the result of examinations of 
many well known acai irons, and all new ones that have 
come under my examinati 
One or two grains of she: iron is all that is necessary for the 
examination, if it be done carefully; but four to five grains had 
better be used, Dissolve the iron ‘in cehlorhydric acid, and if 
add a drop or two at the end of the operation. Hvaporate away 
when the introduction of a clean oc of iron will cause a de- 
position of the copper with all its characteristic properties. 
