J. Lawrence Smith on Meteorites. 161 
the lines, resembling the representation we have of the etched 
surface of Hauptmannsdorf iron. Schreibersite is visible in the 
iron, but so sire in the mass, that it cannot be readily detected 
by mechanical means. Hydrochloric acid leaves a residue of 
beautifully brilliant patches of this mineral. 
Subjected to analysis, it was found to contain 
Tron 95°82 Which corresponds to 
Cobalt, a Nickeliferous Iron, 98°45 
Co ae r; minate quantity not estimated. Schreibersite, mas 
npepaore ~ 100-00 
iron is remarkably free from other constituents. It is es- 
Becially interesting as the largest mass of meteoric iron in this 
country next to the Texas meteorite at Yale College. 
4, Meteoric Iron from Tucson, Mezico. 
e have had several accounts of meteoric masses which exist 
at Tieson Dr. J. L. LeConte having made them known some few 
years ago. Since that time Mr. Bartle tt, of the Boundary Com- 
mission, has seen them and made a drawing of one which he has 
kindly allowed me the use of, as well as the Lege ade GF notice 
of them, which is however, quite brief. This mass is nsed for 
an anvil, resembles native iron, and weighs about six  Wabdred 
pounds. Its greatest length is five feet. Its exterior is quite 
smooth, while the lower part which projects from the larger leg 
is very jagged aud rough. It was found about twenty miles dis- 
tant towards Tubac, and about eight miles from the road where 
we are told are many larger masses. The following figure (3) 
represents the appearance of that meteorite. 
ince my communication last April, I have obtained fragments 
of the meteorite from Lieut. Jno. G. Parke, of the U. S. Topo- 
graphical Engineers, who cut them from the mass at Pixon, 
and to whose kindness I feel much indebt 
Some of the fragments were entirely covered with rust, and 
nished. The Widmannstattian figures are very imperfectly de- 
veloped, owing to: the porous nature of the iron, the pores of 
Which are filled with a stony mineral. The specific gravity 
€n on three specimens were 6:52—6'91—7" ‘13. The last was 
the most compact and free from stony particles that could be 
— and upon that se chemical examination was made 
this w ted to the American Association for the Advance- 
ety of § Bebiec, “Mr I Bartlett’e vale and instructive work, entitled “ Personal 
bas pe’ of Explorations j in pest New Mexico, California, Sonora, and Chihuahua, 
has been 0 me octavo volumes . by the Fea: Kota 
New ori ana we are od comang tate publishers for the use of Mr tt’s fine 
—J. L. §. 
_ Secon Srrizs, Vol Xl XIX, No. 56.—March, 1855. 21 
