[ 208 ] 
Extract of a Letter from the Foundery at Bar- 
naoul, Feb. 9. 1762. 
I here fend you an account of the Earthquake, 
which was felt here on the 28th of November laft 
year. At above half an hour after 7 that evening, 
the air being denfe, calm and quite hill, an undu- 
lating motion was felt, like that of large and high 
waves, which continued for fome minutes, and was 
immediately fucceeded by the Earthquake, with fuch 
violent fhocks, that the beds, chairs, tables, and other 
houlhould goods, were removed from their places and 
thrown about the rooms. The lhaking of the houfes 
was very ftrong. Its dire&ion was from South-Weft 
to North-Eaft. Some perfons palling, at that inftant, 
over the great dyke, before which are the melting 
furnaces, have reported that they heard a loud noife, 
like that of the great hammers when they are all 
employed in the works. 
I beg leave to add, to thefe feveral accounts, fome 
reflexions, relating to the origin, progrefs, and effects 
of this common and well known phenomenon, 
which all parts of the world are liable to. 
1. The ridge of mountains, called Altaiikoi 
Chrebet, or Chain of Altai, from Lake Telet- 
fkoi to the Eaftern bank of the lrtifch, covers 
all that part of the frontiers of Siberia towards 
the South, which lies between the laid Lake and the 
river lrtifch, and extends from Eaft to Weft, and 
4 ' fo 
