MEMOIR ON METEORITES. 279 



of iron was apparent on various parts of the iron by its deli- 

 quescence on the surface. 



2. Meteoric Iron from Campbell County, Tenn. 



This meteorite was discovered in July, 1853, in Campbell 

 County, Tenn., in Stinking Creek, which flows down one of the 

 narrow vallej^s of the Cumberland Mountains. It was found 

 by a Mr. Arnold in the channel of this stream; and having 

 been obtained by Prof. Mitchell, of Knoxville, he kindly pre- 

 sented it to me. It is a small oval mass, two and a fourth inches 

 long, one and three fourths broad, and three fourths thick, with 

 an irregular surface and several cavities perforating the mass. 

 It was covered with a thin coat of oxide; and on one half of 

 it chloride of iron was deliquescing from the surface, while on 

 another portion there was a thin siliceous coating. 



The iron composing the mass was quite tough, highly crys- 

 talline, and exhibited small cavities on being broken, resem- 

 bling very much in this respect, as well as in many other 

 points, the Hommony Creek iron. A polished surface when 

 etched exhibited distinct irregular Widmannstattian figures. 



The weight is four and a third ounces; specific gravity 

 7.05. The lowness of the specific gravity is accounted for by 

 its porous nature. Composition : 



Iron 97.54 



Nickel 25 



Cobalt 60 



Copper, too small to be estimated. 



Carbon 1.50 



Phosphorus .12 



Silica 1.05 



100.52 



Chlorine exists in some parts in minute proportion. The 

 amount of nickel, it will be seen, is quite small; but its com- 

 position is nevertheless perfectly characteristic of its origin. 



3. Meteoric Iron from Coahuila, Mexico. 



This meteorite was brought to this country by Lieut. Couch, 

 of the United States army, he having obtained it at Saltillo. 

 It was said to have come from the Sancha estate, some fifty or 

 sixty miles from Santa Eosa, in the north of Coahuila. Various 

 accounts were given of the precise locality, but none seemed 



