} 
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J. L. Smith— Position of Meteorites in North Mexico. 335 
I would call especial attention to the lines numbered 
land 82 in the catalogue: they are very persistently present, 
though faint, and can be distinctly seen in the spectroscope to 
belong to the chromosphere as such, not being due, like most of 
the other lines, to the exceptional elevation of matter to heights 
where it does not properly belong. It would seem very proba- 
ble that both these lines are due to the same substance which 
causes the D? line. 
I do not know that the presence of Zitanium vapor in the 
prominences and chromosphere has before been ascertained. It 
comes out very clearly from the catalogue, as no less than 20 of 
the whole 103 lines are due to this meta 
Hanover, N. H., Sept. 13, 1871. 
‘ iy 
Arr. XLIIL.—The precise Geographical position of the large 
masses of meteoric tron in North Mexico, with the description of 
a new mass—The San-Gregorio Meteorite ; by J. LAWRENCE 
SmarH, Louisville, Ky. 
Some of the remarkable masses of meteoric iron in Northern 
Mexico have been known to travelers for a number of years; 
ut no very precise information concerning them had been 
given until the yyear 1854, when the first mass, brought from 
that locality, was placed at my disposal by Lieut. Gouch of the 
U.S. Army, and was described in a memoir on meteorites 
published in the American Journal of Science, April, 1854; 1t 
18 now in the Smithsonian Museum, and weighs 252 lbs. __ 
n the return of Mr. Bartlett, of the Boundary Commission, 
Tlearned of two other masses in that region, and Lieut. John G. 
Parke, of the U. S. Army, placed a fragment of one of them 
in . 
is 
7 
_ Dow in the Smithsonian Institute, and weighs, I believe, several 
Still later in the year 1868, Dr. H. b. bt 
Under my examination eight masses of meteoric iron that had 
i brought to the United States f 
to Mexico, I requested him to get all possible information in 
Tegard to Die guogiaphiall position of these bodies; this he 
