J. L. Smith—New Meteorite Mineral. 137 
28iR+SiR., being two atoms of enstatite or bronzite plus one 
atom of olivine. There was a slight inaccuracy in the state- 
ment of the formula in the former paper. 
I have thought proper to call the mineral Peckhamite in 
honor of Professor Peckham, who has been industrious in 
collecting the minerals of our Lake region, and to whom I am 
indebted for every facility in prosecuting my researches in 
connection with this meteorite. 
where the larger masses fell, of evidence that the fall of the 
meteorite was attended by a shower of fragments, as of hail- 
stones, falling upon the water of a lake near by. The search 
which 
stones that were collected after the Pultusk fall, have but to 
imagine these stones to be all metal, and some idea may be 
formed of what these fragments are like; they are, however, 
more irregular than the Pultusk stones, These lumps of iron 
were on the wet prairie for nearly one year, and yet they are 
not in the least rusted, many parts being bright, some looking 
like nuggets of platinum. It may be that they are protected 
by an invisible coat of melted silicate. 
_It is clear that the rapid passage of the meteorite through the 
air disintegrated the surface very rapidly, pulverizing the stony 
part completely ; and the nodules of iron not undergoing this 
disintegration fell in the track of the meteorite for many miles, 
and the greater number of them will never be found. 
I must state that we are indebted to Mr. Charles F. Birge, of 
Keokuk, Iowa, for collecting these facts, as well as many others 
in connection with this most remarkable meteoric shower. 
In conclusion, I would state that this last discovery enables 
us to fix more positively the direction of the meteorite. In 
former descriptions, including my own, the course of the mete- 
orite is given as from northwest to southeast. But its general 
direction was from south-of-west to north-of-east; the meteor- 
ite came from south of an easterly course in Davidson County, 
and going north of that line in Emmet County, dropped the 
smaller fragments over the surface of the latter. 
