66 The American Geologist. Angust, i89i 
II. Tlit Iition Co. Meteorite.'^ 
The Iowa Co. meteorite fell near Homestead and West Liberty, 
in Iowa Co., at 10:15 p. m., Feb. 12, 1875. Eighteen fragments 
are recorded, weighing as follows, in pounds: 11. 9G, (J.18, 3.85, 
3.73, 3.70, 2.96, 1.94, 1.51, 0.63, 0.6, 0.44, 0.31. 
The above, with the exception of two or three, ai-e in the col- 
lection of Lawrence Smith. The}' have the usual dead black crust. 
Specific gravit}', about 3.0. Chemically' this meteorite is of con- 
siderable interest as it is one of the ver}' few in which the occluded 
gases have been examined and estimated. By heating some of the 
metal freed from matrix, gases were evolved the constitution of 
which vai-ied according to the temperature. 
At 100" C, the gaseous mixture evolved consisted of 
Carbon dioxide '.to. 46 per cent. 
Carbon monoxide 00.00 " " 
Hydrogen 4.54 " " 
Nitrogen 0.00 " " 
100.00 " ' 
When exposed to full red heat there was found 
Carbon dioxide 5.50 per cent. 
Carbon monoxide 0.00 " " 
Hydrogen 87.53 " " 
Nitrogen 6.91 " " 
100.00 " " 
III. The Emmet Co. Meteorite.^ 
The Emuiet Co. meteorite (called -'The Peny Meteor") fell 
near Estherville, Emmet Co., at 5 p. m. , Maj' 10, 1879. Sixteen 
large masses are on record, weighing respectiveh', in pounds : 500 
(sent to the British Museum, and subsequently' divided between 
London, Berlin and Vienna,) 175 ( U niversitj' of Minnesota), 2.21, 
1.81, 1.31, 1.21, 1.07, 0.95, 0.36, 0.32, 0.23, 0.18, 0.14, 0.14, 
besides man}' small pieces. 
The aerolites belonging to this fall are of the iron tj'pe, and 
consist generally of a network of iron enclosing olivine. The pro- 
portion of the two varies greatl}' in the difl'erent individual masses, 
some being nearly all iron while others contain but little. Crust 
bluish. The specific gravity of the stony portion was found to be 
3.35, of the metal 5.97. 
In chemical composition, the Emmet Co. meteorite, so far as 
examined, has no strongl}' distinguishing features. 
^Ara. Jour. Sci., 2d Serie-;, Vol. VI, p. 40.5. 
^Hunli niton's Caialogiic. 
