J. L. Smith on the Bishopville Meteoric Stone. 225 
Arr. XXIV.—Chiadnite of the Bishopville Meteoric Stone 
to be a Magnesian Pyromene; by J. LAWRENCE SMITH, Prof. 
oes f 
’ Chem. Med. Dep. University of Louisville, 
In 1846, Prof. C. U. Shepard published an account of an 
exceedingly interesting meteoric stone that fell at Bishopville, 
South Carolina, in 1843, differing in its external character from 
other meteoric stones; the fractured mass being exceedingly 
| white, except where metallic iron and other associate minerals 
occur. I would refer the reader to Prof. Shepard’s description 
of it in this Journal, Sept. 1846, p. 381. 
: The composition of the snow-white mineral (constituting about 
90 pr. ct. of the entire mass) as given by Prof. Shepard is— 
j Oxygen. Ratio of ox. 
| May 28-25 11°30 i 
Soda, va ; : - 189 338 
From the results of this analysis he considered it a tersilicate of 
magnesia, constituting a new species to which he gave the name 
chladnite. 
; 
mit it to a thorough analysis. Hee j 
To render the chladnite soluble in acid, it was fused with four 
times its weight of carbonate of soda and potash, with asmall frag- 
3 ‘ : - 60°12 59°83 
es 5 : Z . 39°22 
tise ge agente ee age ; 
: eroxyd of iron, - . Shp ee ees : : 
: Rida wis fi Ll Pp fie : 1 14. 74 
o 
100-61 100-29 
ates, Without the addition of a small piece of caustic potash or soda, and never 
ze a reg - ieasiesdepaian or hornblende without this precaution. I 
that in 
