338 Analysis of the Braunau Meteorite. 
true nature has been very nearly if not exactly made out. The 
water was estimated by heating it to 400° Fah.—the carbonic 
acid by what was lost in dissolving it in hydrochloric acid in a 
small apparatus properly arranged; to the acid solution bicarbon- 
ate of ammonia was added, which redissolved all the precipitate 
ted the lime, (which was afterwards estimated as a sulphate); the 
solution filtered from this precipitate, was boiled and the uranium 
deposited itself as a double salt that was heated to redness and 
the oxyd estimated in the form of olive colored oxyd. (Peligot’s 
atomic weight for uranium was the one employed, 750—ox. 100). 
The mean of two analyses, one of 85 and the other of 65— 
milligrammes, is 
Atoms. Calculated. 
45°5 
Water, ‘ 452 20 
Carbonic acid, . 10-2 2 111 
Lime, ‘ ‘ 8-0 1 ie 
Peroxyd of uranium, 38:0 1 36:3 
101-4 100-0 
The composition of the mineral is represented by 
The pitchblende upon which the Liebigite is found was ana- 
lyzed, and at some future time I may have occasion to allude to 
this analysis with some remarks upon the salts of uranium; for the 
present, suffice it to state, that the pitchblende contains lime asso- 
ciated with the oxyd of uranium, a circumstance that along with 
the tendency of oxyd of uranium to form double salts, accounts 
for the formation of both the Liebigite and Medjidite. 
I have thought proper to give this double carbonate the name 
of the distinguished chemist of Giessen, as a demonstration of 
the high value I set upon his memoirs and important contribu- 
tions to the science of chemistry in general. 
Constantinople, January Ist, 1848, 
Arr. XXXVI—Analysis of the Meteoric Iron that fell near 
Braunau in Bohemia, on the 14th of July, 1847; by 4: 
Durtos and N. W. Fiscurr.* 
1. Treatment with Nitric Acid.—5-16 grammes of the mete- 
oric mass, removed by a hard file from the entire block, were put 
into a matrass to which was adapted a suitable delivery-tube tet 
minating beneath the surface of water, and were submitted to 
ef kLicge nig from Poggrudor€'s Annalen, vol. Ixxii, p. 475, by WS 
2. ESA yds 
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