General Science, 
215 
sited in the King’s Cabinet in Berlin, and which weiglis 1085 
grains, was also found in Choco. These facts allow us to hope, 
that platina may be found in its original repository somewhere 
in that country. 
r 
43. Alpine Limestone of the Carpathians. — Count Dunin 
Borkowski, during his journeys among the Carpathian Alps, ob- 
served the great formation of alpine limestone resting on a marl- 
slate, probably a variety of lias limestone. 
IV. GENERAL SCIENCE, 
44. Earthquake at Lead-Hills. — The following account of the 
shock of an earthquake experienced at Lead-Hills on the S9th of 
November last, is an extract of a letter from the overseer of 
the Scots Mining Company to Alexander Irving, Esq. : We 
were alarmed here yesterday morning about eight o’clock by an 
uncommon sound, which was heard by the people both above and 
below ground. A shock v*^as felt like that made by a very strong 
shot, attended by a rushing noise. The miners under ground 
were so alarmed as to think that the shafts or sumps were run- 
ning together. A second shock, still stronger, was felt last 
night about half past eleven o’clock. I was asleep in bed, and 
was awakened by it. I felt as it were a great stroke upon the 
bed, and heard a rushing noise, which died away in a hollow 
sound, as if at a great distance. I cannot say how long it last- 
ed, as I was asleep at the commencement ; but it was over in a 
very short time.” 
45. Fall of a Mountain into the Moselle. — On the 8th July 
1820, a part of the mountain called Sept-Heure, ( Siclien-^ 
Rithren-Berge^) situated near the Moselle, in the circle of Co- 
chenim, and ten leagues from Coblentz, fell into the river. It 
had for many years given indications of a progressive move- 
ment. More than twenty vineyards have been destroyed by it. 
Another mountain called the Chaudron, ( den Kessel^ ) exhibits 
numerous crevices, and threatens to stop the course of the 
Moselle by its fall. Journal dc Physique^ Mai 1820, p. 399. 
46. Height of Snowdon^ as determined hy Mr Wollaston's 
Thermometrieal Barometer. — This ingenious instrument, wliich 
