C. U. Shepard on a new locality of Meteoric Iron. 349 
described by others, though it may prove they are the same as 
those mentioned by Assistant A. Schott on page 84, part ii, of 
Major Emory’s Report on the Mexican Boundary Survey, and 
which are laid down as occurring 90 miles northwest from Santa 
Rosa; but whether he refers to the Santa Rosa of Cohahuila, 
lat. 28°, long. 101° 30’, is not certain. They certainly do not 
seem to belong to the locality on the Sancha estate, from whence 
eame the 250 pound mass in the Smithsonian Museum at Wash- 
ington, as this is stated to have occurred but 50 or 60 miles 
from Santa Rosa, Cohahuila. 
Description of the specimen. 
It is a flattened cleavage mass rather above a quarter of am 
inch in thickness, by two inches in length and one and a half 
broad. It weighs 120 grams, or rather more than a quarter 
of a pound. Its color is dark iron-black without any appear- 
ance of iron-rust. About three-fourths inch square of one of its 
sides exhibits the original surface of the mass, showing three 
well marked though shallow polyhedral depressions, but, like 
the Madoc, the Texas, and many other irons, without any well 
defined crust. For the rest, the two broad surfaces are nearly 
cleavage in the mass. e 
are also plane, and have resulted from octahedral cleavages. 
; g 
through the slight projection of a lamina rather more than one- 
eighth of an inch in thickness, a fragment weighing six grams 
of a lens. Among them was a feeble trace of a blackish pow- 
der, proceeding no doubt from the black pellicle of the exterior 
‘Am. Jour. Sc1.—Seconp Serizs, Vou. XLII, No. 126.—Noy., 1866. 
45 
