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fo goes on beyond the Irtifch, in the fame direction, 
thro’ the country of Zengoria. 
2 . Thefe mountains abound with all forts of mi- 
nerals ; particularly that part which borders on the 
river Dgelo, which runs from the Weft into the river 
Katunja, is all full of a kind of Saltpetre, which is 
found in form of a cement, in great plenty, in the 
clefts and between the beds of rock ; with this the 
Tartars and Kalmucks make very ftrong and good 
■Gunpowder, by an induftrious, fimple and expe- 
ditious method. 
3. This place is fituated almoft Eaftward of Fort 
Uft Kamenogorfki, from whence they feem to have 
given the moft exadt account of the Earthquake. 
The inhabitants, being accuftomed to thefe events, 
which happen there almoft every year, muft be better 
able to trace its origin, progrefs, and effedts than thofe 
of other places. 
4. If . the combuftible matter took fire at firft in 
the places mentioned in the fecond article, and if it 
may be conjedtured that in this ridge of mountains, 
infinitely more combuftible matter may be contained 
than in the flat country, without any interruption; 
the diredtion of the Earthquake muft undoubtedly 
have followed the courfe of the ridge of mountains, 
that is to fay, from Eaft to Weft, till it was interrupted 
by invincible obftacles. 
3. According to advices juft received from the 
Kirgifs Kaifacks, who inhabit the parts beyond the 
Irtifch, they have had no Earthquake, neither on the 
28th of November, nor for a long while before or 
after; and, as it came in a diredt line from the Eaft 
Vol. LIII. F f to 
