188 C. U. Shepard—Estherville Meteorite. 
stone. It appears to have been fused and is surrounded on all 
sides by the black crust, coming from the stony material. It 
will be interesting to know whether this character prevails over 
the main mass from which these fragments were separated. If 
such should be the fact, it would give usa second case in which 
meteoric iron seen to fall, reached the earth in the possession 
npg of a high metallic luster. The other instance is that 
ickson County meteorite, Tennessee, July 30, 1835, 
The chrysolite, in large distinct concretions and highly _ 
talline individuals, deserves a particular notice. Som 
show imperfect crystalline facets, and nearly all the ‘ber 
ones possess eminent cleavages. Ina few instances they are 
nearly transparent and gem-like. Specific gravity (on 0°77 
grams) = 3°50. 
The next most conspicuous species present is troilite. This 
also is in distinct individuals, pane et as large asa pea. It 
is highly crystalline, rarely presenting splendent crystalline 
facets, whose color approaches silver-white. The proportion in 
which it exists is apparently large, and may equal two per cent. 
xt in importance comes the feldspathic mineral, presuma- 
bly doorthite It is highly g rreoey white, lustrous and 
nearly transparent, resembling in these particulars the similar 
mineral found among the see of Vesuvius. 
e specimens are two very distinct examples of an 
opal-like mineral of a yellowish rows color, which I take to be 
chassignite. Its luster is resinous, structure imperfectly slaty, 
to massive and conchoidal. A small granule of chromite 
curs in one of the fragments of the massive sak solite 
Such are the minerals thus far distinguished in the Ksther- 
ville meteorite. As a whole, it differs widely from the norma 
meteoric stones. These differences consist, in the first place, in 
the unusual prevalence of a chrysolite similar to that found in 
the meteoric irons; secondly, in the large proportion of mete- 
oric iron — t, a and i n the manner in — it is involved 
rolled sate oolitic shapes, so common in meteoric stones, is 
vnie rocks The _— portions much more drt ete the oli- 
pouaily fica a are in the paeeitie group of the Tevet in 
_ which case it would form an aed itself. 
= ~ New Haven, —— 1879. ' 
