162 J. Lawrence Smith on Meteorites. 
On examination it is seen to consist of two distinct parts, me- 
tallic and stony; the latter was only in minute particles, yet it 
was impossible, among the specimens at my disposal, to finda 
piece that was without it. On analysis, the following ingredients 
were found: 
Tron, ‘ A . 85:54 Which represent the following minerals: 
Nickel, . ‘ 5 
Cobalt, ° . s : "61 Nickeliferous iron, . 93°81 
Copper, . : : 03 Chrome iron, : : 
Phosphorus, : 4 "12 Schreibersite, "84 
Chromic oxyd, . 21 living, . 506 
Magnesia, . ‘ 2°04. a 
; 3°02 100712 
Al trace 
100°12 
3. 
ee rn 
Some few particles of olivine were separated mechanically, 
and readily recognised as such under the magnifying glass in con- 
nection with the action of acids, which readily decompose it, fur- 
nishing silica and magnesia. Some of the olivine is in a pulver- | 
ulent condition, resembling that of the Atacama iron. The nick- . 
eliferous iron of this Tucson meteorite also resembles that of the : 
Atacama iron; calculated from the above results, it consists 0 | 
Iron 90/91, nickel 8:46, cobalt 63, copper, trace= 100-00. | 
This meteorite* is one of much interest, and it is to be hoped 
that some of our enterprising U. S. Topographical Engineers 
_ * Since my noti i i i Am. 
Sey Scatter ere beeper 
the Am. Assoc. He seems inclined to think that the stony material might be chlad- 
nite, although he could form no definite conclusion on this head. From what bas 
