34 
CASES 5 AND 6.— Siderolites, from Kiowa County, Kan. 
Found in 1889. The mass in Case 5 weighs 465 pounds; the 
largest in Case 6, 344.5 pounds. There are also three smaller 
masses, and three or four slabs cut to show the structure of 
the iron, the cavities of which will be seen to be filled with 
olivine. 
CASE 8.— Aerolite from Long Island, Phillips County, Kan. 
This is the largest single aerolite yet known. The mass struck 
ledge in falling and was broken into a large number of pieces. 
The aggregate weight of the pieces here shown is 1,184.5 pounds. 
Other portions are known which show the total weight of the 
original mass to have been over 1,300 pounds. The pitted sur- 
face characteristic of meteorites is well illustrated. Some of 
the surfaces of fracture show **slickensides. Polished sections 
show metallic grains to be scattered through the mass. 
CASES 3 AND 4. — Casts showing form and surface char- 
acters of meteorites. Those in Case 3 are largely of aerolites, 
those in Case 4 of siderites. These casts are made before the 
meteorite is cut for distribution. Some of the forms possessed 
by meteorites will be seen to be remarkable, notably that of 
Babb’s Mill, which is cigar-shaped, and those of Hex River 
Mts. and Kokstad, which have a shape like the lower jaw of a 
mammal. 
PEDESTALS 9 AND 11.— Models of three , large iron 
meteorites found many years ago in the State of Chihuahua, 
Mexico, and now in possession of the School of Mines of the 
City of Mexico. These are among the largest meteorites known. 
PEDESTAL 12.— Two large masses of Canon Diablo, Ari- 
zona, meteorites, weight 1,013 and 265 pounds. 
The smaller one is hung by a chain which passes through 
a natural perforation. This perforation was undoubtedly formed 
by the fusing out of a nodule of iron sulphide contained in the 
meteorite, by the heat generated in the passage of the mass 
through the earth’s ^atmosphere. 
^hese meteorites are also remarkable as containing minute 
diamonds. 
NORTH WALL.— Map showing distribution of meteorite 
falls in the United States. The apparent paucity of falls in 
the Western States is due to a lack of population rather than to 
a lack of falls. 
