Account of the Earthquake in Chill 
The slits and holes should be numbered, and a register kept 
of the processes going on in each of the tubes, by which they 
are occupied. 
It is hoped that bent tubes will be found useful to students at 
Universities, to travellers, and to those who cannot carry large, 
brittle, and expensive apparatus along with them. 
To those who have not the means of purchasing expensive 
chemical apparatus, the bent tubes will recommend themselves 
by their cheapness ; each of them superseding, for small experi- 
ments, a retort, a pneumatic trough, and a receiver. 
In the laboratory of the chemist they will also be useful, by 
enabling him to perform experiments, in the small space of 8 or 
9 inches square, which would have otherwise required 8 or 9 
retorts, and as many receivers. 
An addition may be made to these tubes, by which the qua- 
lity of the gas evolved at any period of the experiment may 
be examined, without disturbing the process going on. An ac- 
, count of this improvement will be the subject of an early com- 
munication. 
Paisley, 
October \ 
Akt. VIII . — Account of the Earthquake which happened in 
Chili ^ on the l^th (f November 
I CANNOT refuse myself the pleasure of writing to you by so 
good an opportunity as that which now offers itself, particularly 
as I heard that you wished to have an authentic account of the 
earthquake which has taken place at Chili. I have received my 
information from some very intelligent persons ; but as they all 
seem to agree, I shall adhere more particularly to that given by 
a friend of mine, who has taken notes. The whole description 
would fill a volume ; so that I shall select, those observations from 
memory^ which I think are unlikely to have been inserted in the 
public prints, and which I think will be most interesting to you. 
On the night of the 19th November 1822, at Quintera, the 
usual sea-breeze had completely subsided about 8 o’clock p. m. ; 
* Extracted from a letter which wc have been favoured with a sight of. 
