222 J. L. Smith—Description of Meteoric Stones. 
Mineral constituents of the Stone.—Careful examination under 
the microscope of the spo surface, as well as of a section 
rub 
with nickeliferous iron and — anton like anorthite is 
distinguishable. The first two inerals constitute the bulk | 
of the stone, and ioe is easiiiy more than one variety of 
each of these minerals present. The nickeliferous iron is 
quite abundant, although Professor Shepard states that from a 
casual observation he estimates it at one per cent; by the care- 
re method adopted for aeparating it, I find in two average 
and in this way it was found to contain both classes of silicates 
referred to, a fact, as already stated, sustained by chemical exam- 
ination. Iconsider He mineral constituents of the Rochester 
stone to be about as f 
Bronzite ey py Hike minerals..._.... 46°00 
Olivine mmersis... Sye0> 41°00 
Wickeliterous irom 20 Fi ol. oe ck: OOO 
RYOHO es oe a 3°00 
rome Wen Vi a Ie 
2. Warrenton (Missouri) Meteorite. 
About sunrise, on the 8d of January, 1877, five miles from 
Warrenton in the State of Missouri, lat. 38° 50, long. 91° 10’, a 
sound was heard by certain observers similar to the whistle of a 
distant locomotive; or, as stated by others, like the passage of a 
cannon ball throug the air. The sound came from the “north- 
west, and became louder and louder to four observers near 
Warrenton. On looking up they saw an object falling, which 
struck a tree, breaking off the limbs, and then coming to the 
ground with acrash. The observers were fifty or sixty meters 
distant from the spot where it fell. On approaching the place 
they saw a mass of stone broken into a number of pieces. 
From the fragments they suppose it to have = originally of 
a conical form, and about eighteen inches in len The snow 
was melted, and the frozen ground thawed near bhiees it fell, 
but the pieces, although warm, were easily handl The 
weight was estimated to have been about one hundred pounds ; 
but, whether this estimate be correct or not, only epee ten or 
fifteen pounds of fragments have been preserved, a por- 
tion of which is in my possession, mostly in small fragments ; ; 
