- a 
of the new Catalogue of Meteorites. 181 
in the same vicinity, according to the Minerva, p. 1. vol. 1. 
n. 12, 26th of June 1824, published at New York. 
III. Additions to the Catalogue of fallen Substances not being 
Meteoric Stones or solid Iron. 
1792, the 27th, 28th, and 29th of August. A rain of dust 
for three days without intermission, in the vicinity of La Paz 
in Peru, which could not have proceeded from a volcano. At 
the same time explosions were heard, and the sky was seen 
inflamed.— Mercurio Peruano, t. vi. 7th December 1792. 
1824, 23d of August. At Mendoza in South America, near 
the river Plate, from a black cloud, a rain of dust with which 
the whole city was covered. Forty miles from the city the 
same cloud discharged itself again.—From a Buenos Ayres 
newspaper, lst November 1824. 
1824, 17th of December. About a quarter after six o’clock 
in the evening, at Neuhaus in Bohemia, a bituminous mass must 
have fallen, accompanied by a globe of fire (a pha:nomenon 
which has frequently happened before) which had been seen 
to descend there, since a part of the meteor remained burning 
against the church steeple for a quarter of an hour.—Haude 
und Spenersche Zeitung of Berlin, No. 7. 10th of January 
1825*. 
On the Mechanical Structure of Meteoric Stones. 
Dr. G. Rose of Berlin has succeeded in separating crystals 
of pyroxene from a large fragment of the meteoric stone of 
Juvenas, the angles of which he has measured with a reflec- 
tive goniometer. One of these crystals is that modification of 
the octahedron which is represented in Haiiy’s Mineralogy, 
fig. 109. The same structure also includes microscopic ma- 
cled-crystals, which seem to be Labrador-spar. [? ] 
At the request of M. Humboldt, Dr. Rose has also ex- 
amined the meteoric mass of Pallas, and the trachytes of 
Chimboraco, and other volcanos of the Andes. He found 
the olivine of the Siberian mass perfectly crystalline; the 
trachytes contained for the most part inclosed crystals of al- 
bite and hornblende. 
This notice may serve as an explanation of the imperfect 
account given before. 
* I ought also to mention that we have lately had an analysis by M. 
Buchner, in Kastner’s Archiv. vol. y. p. 182, of a slimy meteor. It was 
found to be an organic substance like a mucus, containing meplitic matter. 
XXVII. Some 
