47 
Cases 5 and 6. — Siderolite, or Pallasite, from Kiowa 
county, Kansas, found in 1889; nine pieces. 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 Phillips county, Kansas. One large 
mass broken into 2,934 pieces. The aggregate weight of these is 
1184.5 pounds, making the largest weight of any single aero- 
lite known. The broken condition is due to the fact that the 
stone fell upon a ledge. The pits characteristic of meteoric 
stones are well shown upon the surface of the principal mass. 
The white coating was formed subsequent to the fall of the stone. 
Cases 7 and 10. — Casts of notable meteorites. Collection 
showing terrestrial minerals which approximate in composition 
to those found in meteorites. 
Pedestals 9 and 11 . — Models showing the form and size 
of the huge, iron meteorites found in the State of Chihuahua, 
Mexico. 
The original masses are exhibited at the School of Mines of 
the City of Mexico. 
Pedestal 12. — Two large masses of Canon Diablo, Arizona, 
meteorites, weight 1013 and 265 pounds. 
Note the natural perforation through which the chain passes 
by .which the smaller one is hung. It well illustrates the auger-like 
action of the air to which a meteorite is exposed during its passage 
to the earth. These meteorites are also remarkable as containing 
minute diamonds. 
East Wall. — Map showing distribution of meteorite falls in 
the United States. 
For detailed information regarding the specimens and 
meteorites in general, the Guide and Handbook of the collection, 
a copy of which will be found in the Hall, may be consulted. 
