"معاملات الجمعية الجغرافية في بومباي، من يناير ١٨٤٧ حتى مايو ١٨٤٩. تحرير السكرتير. المجلد VIII." [‎٢‎٦] (٤٩٦/١٢٩)

were actually in the focus it was found to be at 28*08 : but as this
instrument was known to have had a difference of from *06 to *08
above the broken barometers, the maximum depression may be esti
mated at 28*00 inches. While this was the case near the middle of
the storm, at the distance of 600 or 800 miles towards the circumference
the Barometer was up to 30*00,—at Madras on one side, and in
Lat 6 7 S., Long. 56° 5S / E., {Zemindar's position) on the other.
The following table, compiled, with some difficulty, and from the
readings of instruments of the relative standards of which we have
no knowledge, give a tolerably correct idea of the level of the
mercury at intermediate distances, from the ordinary pressure at the
extreme towards the centre of greatest depression.
Barometer on the 14th April, 1847.
Barometer on the 17th April, 1847.
Places.
Distance
in miles
from the
focus
Barome
ter.
Places.
Distance
in miles
from the
focus.
Barometer.
Madras
486
30*00
Zemindar
800
Trin comale e
320
29*90
Madras ...
300
Ov Uv
29‘97
Colombo
220
29*75
Holom bo
300
29*80
S. Buckinghamshire
200
29-72
Victoria
Kjyjyj
120
i* d < j \)
29-75
Cannanore
100
29-64
Buckinghamshire
90
29-58
Mermaid
60
29*35
State of the Barometer on 18th April, 1847.
Places.
Distance
in miles
from the
focus.
Barometer-
Zemindar.
900
30-00
Colombo
500
29-86
29-94
Madras
180
Raj cote in Guzerat.,...
trOl/
450
29-85
*29'70
Bombay
910
Cannanore
a-±\j
1 30
29-78
29-70
29-36
28-35
28-00
Steam er Victoria.......
1 30
Ship Mermaid
80
Ship Buckinghamshire
tV • ,P
Do. m the locus
Ol/
20
0
It is impossible to attain any degree of nicety in these calculations,
as tiere are no means of correcting, or reducing the different instru-