_ @fitical examination 
J. L. Smith on the Franklin county Meteoric Iron. 331. 
nd 
1 
: a 
the original notes were displaced ; the notes have been recently 
yz 
form is somewhat globular, with a highly crystalline 
ae grav. 7°692. : 
ts composition when perfectly freed from rust and earth is 
Iron, 90°58 
Nickel, EE. 8°53 
Cobalt, _ : 0°36 
OSD DOR oligo saan « Ciena nd wes minute quantity 
Phosphorus, ---- -. 0°05 
99°52 
Having, as it will be seen, the usual composition of meteoric 
irons. 
While on the subject of this iron, I will add some remarks. 
2. On the presence of Cobalt in Meteoric Irons. 
Irons, whose analyses are given without mention of the presence 
of cobalt, and in some instances, with the distinct statement that 
it 1s absent, as in the recent examination of a meteoric 1ron from 
Auburn, Macon county, Alabama, by Professor Shepard, who 
States that “neither cobalt, tin nor copper was detected 1m spo 
iron.” I cannot but suggest the importance of making a most 
of teas irons before pronouncing this fact; 
. ? for in every analysis that I have made of meteoric irons, ove 
