226 shit Sinsthx Description-of Meteorie Siac, 
sometimes five or six millimeters in diameter, are disseminated 
through the two alike; and so with the triolite, the globular 
structure in some parts, and a few specks of a black siliceous 
mineral; and, by a singular coincidence, the specific gravity of 
the part I tested is identical with that as made out by Maske- 
lyne, viz: 341. Under the microscope it presents the appear- 
ance described by the same author. 
Chemical examination.—The stony material freed from metal- 
lic iron, consisted : 
Matter soluble in chlorhydric acid --..--_--.- 56°50 
Matter insoluble in chlorhydric acid --.-_---.- 43°50 
Some of the soluble part was composed of troilite, which I 
could not separate mechanically, but is deducted in the follow- 
ing analysis: 
Soluble part. Insoluble part. 
: 57°60 - 
Pees ee ee gS 33°65 
atom proceaiae (50'S. 2. 252252 80°68 11°42 
An ee SE A EE *43 
Mee foe) ea es ee 5°70 
Magvew <; S52 2G ee. og 34°61 23°97 
romfum ‘orble 4269. gt Jak "38 
SS ae ee es sg 1°24 
100° 
The portions examined contained nickeliferous iron 5°93 per 
cent, consisting of: 
SVG 2 er a a Le ia 1 1 oe et 
hee a es |. re eee ea BSE 
Cweelt <u... .: Oth oes eae. ace t 73 
99°72 
Mineral constituents of the Cynthiana Stone.—The minerals in 
this stone are quite easily distinguished by the eye, but are 
very much more conspicuous ander a moderate magnifying 
power, especially the round and distinct concretions of a light 
yellow bronzite. The troilite and metallic specks and fila- 
ments are also easily seen. : 
No attempt was made to separate the stony minerals in suffi- 
cient quantity for analysis; quantitative tests were made to 
distinguish their character. From the chemical examination 
previously made I deduce the following as about the propor- 
tion of the mineral constituents: 
Obvisée Mies. 50°00 
Bronzite and pyroxenic minerals ---. ---. .---30°00 
Nickeliferous 1rO@R ob ee Er OO 
ee ad 
