39 
other pyroxemes and occasionally feldspar. They have a compo- 
sition analogous to the most basic volcanic rocks of the earth. 
The presence of metallic grains is a distinctive feature and serves 
often as a means of identification. Of special historical interest 
among the specimens shown are fragments of the Ensisheim 
aerolite which fell in 1492 and is the oldest meteorite the date of 
whose fall is known, and of the L’Aigle Stones which fell as a 
shower of over 1000 individuals in 1803 and convinced scientific 
men for the first time of the fall of stones from the sky. In large 
quantity are shown specimens of the fall of Farmington, Kansas, 
Pultusk, Poland, and Winnebago County, Iowa. Of the latter six 
hundred and sixty complete individual aerolites are shown. Of 
remarkable composition is the light colored Bishopville stone, 7 
grams of which are shown. It is made up of nearly pure enstatite. 
Of the rare carbonaceous meteorites are shown specimens of Or- 
gueil, Mighei and Alaie. 
Cases 5 and 6, — Siderolites, from Kiowa county, Kansas. 
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, Kansas. 
This is the largest single aerolite yet known. The mass struck a 
ledge in falling and was broken into 2,934 pieces. The aggregate 
weight of these is 1184.5 pounds. The pitted surface character- 
istic of meteorites is well illustrated. Some of the surfaces of 
fracture show “slickensides.” The metallic grains of the interior 
are shown in the polished sections. 
Cases 3 and 4. — Casts showing form and surface characters 
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 under jaw of a mammal. 
Pedestals 9 and 11. — Models of three large iron meteorites 
found many yearsago in the State of Chihuahua, Mexico, and now 
in possession of the School of Mines in the City of Mexico. With 
one exception these are the largest meteorites known. 
