Analysis of the Maryland Aerolite. 137 
ments. I'he iron is metallic and perfectly malleable ; although 
none of the pieces are larger than a pin’s head, still they are 
readily extended by the hammer. ‘The iron in the crust is 
glazed over, so that the eye dees not perceive its metallic 
character, but the file instantly brightens the innumerable 
points, which then break through the varnish of the crust, 
and give it a brilliant metallic lustre, at all the points where 
the file has uncovered the iron. ‘The same ts the fact with 
the Weston stone, and with that of L’Aigle, but not with that 
of Stannern in Moravia; specimens of all of which and of 
the meteoric iron of Pallas, of Louisiana, and of Auvergne, 
are now before me. The zrolites of Gonzac and of Stan- 
nern as stated by M. Bellevue, are the only ones hitherto 
discovered that do not contain native iron, and do not affect 
the magnet ; still their analysis presents a good deal of iron, 
which is probably in the condition of oxid. 
The iron in the metallic state is very conspicuous in the 
Weston stone, sometimes in pieces of two inches in length, 
and both in this stone and in that of Maryland, it is often 
brilliant like the fracture of the meteoric iron of Pallasfand 
of Louisiana. 
In the analysis of the Weston stone published in 1808, I 
did not discover chrome, although it was afterwards an- 
nounced by Mr. Warden. I! have desired Mr. Chiiton to re- 
analyze the Weston stone and he has nearly completed{{the 
labour, the result of which may be given hereafter but he 
writes that he has not been able to discover any chrome. F. 
am not quite sure that I discover pyrites in the Maryland 
wrolite, although it 1s mentioned by Dr. Carvar in bis letter 
in the preceding volume.—Ep:Tonr. 
October 4, 1825 
Vou. X.=-No. 1. 16 
