33 
It IS a mass of great weight. A large series of individuals from 
Canon Diablo, Arizona, is shown and some etched slabs. There 
are also many of the Santa Catharina, Brazil, masses which are 
much oxidized. These have so high a content of nickel that 
their meteoric origin has been doubted. Other siderites ex- 
hibited in large quantities are the Kenton Co., Ky., 100 lbs the 
Indian Valley, Va.. and Ellenboro, N- C, almost entire and’ Los 
Reyes, Mexico, entire. Widmannstaetten figures of great beauty 
may be noted on the Lion River, Tazewell, Smith Mountain, 
Carlton and other sections. 
CASE 2. Siderohtes. These contain metallic and stony 
matter in about equal proportions and form a transitional group 
between the siderites and aerolites. Frequently the structure is 
nifJinp whose cavities are filled with 
olivine. Specimens from fifteen localities are shown including 
one complete individual of the Crab Orchard, Tenn find 
Aerolites. These are meteorites made up largely of stony 
matter. The surface is usually black, smooth as if fused, and 
somewhat pitted. On breaking the thin, black crust which cov- 
ers the exterior, the interior is generally found to be of a gray- 
ish color, with scattered metalliferous particles. Analysis shows 
these meteorites to be made up largely of olivine, enstatite and 
other pyroxenes and occasionally feldspar. They have a com- 
position analogous to that of the most basic volcanic rocks of 
the earth. The presence of metallic grains is a distinctive fea- 
ture and serves often as a means of identification. Of special 
istorical. interest among the specimens shown are fragments 
of the Ensisheim aerolite which fell in 1492 and is the oldest 
meteorite ^e date of whose fall is known, and of the L’Aigle 
stones which fell as a shower of over 1,000 individuals in 180.3 
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 Saline Township, Kan., Farmington, Kan., Pul- 
tusk, 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 speci- 
mens of Orgueil, Mighei and Alais. 
