!['The Transactions of the Bombay Geographical Society. From January 1863 to December 1864. (Edited by the Secretary.) Volume XVII.' [‎197] (368/524)](https://iiif.qdl.qa/iiif/images/81055/vdc_100085203917.0x000001/ST 393_vol 17_0378.jp2/full/!1200,1200/0/default.jpg "'The Transactions of the Bombay Geographical Society. From January 1863 to December 1864. (Edited by the Secretary.) Volume XVII.' [‎197] (368/524)")
'The Transactions of the Bombay Geographical Society. From January 1863 to December 1864. (Edited by the Secretary.) Volume XVII.' [197] (368/524)
The record is made up of 1 volume (451 pages). It was created in 1863-1864. It was written in English. The original is part of the British Library: India Office The department of the British Government to which the Government of India reported between 1858 and 1947. The successor to the Court of Directors. Records and Private Papers Documents collected in a private capacity. .
Transcription
This transcription is created automatically. It may contain errors.
MAGNETIC INTENSITY OF THE EARTH.
197
thermometer placed three feet above the ground, whereas it is not im
probable that the variations of temperature of the mass of the shell of air
likely to act influentially (if it acted at all) would have been nearly as
well represented by the thermometer in the box as by that outside.
The approximate value for the temperature co-efficient of the bifilar
magnetometer for 184/ has been obtained by me approximately (1*58
scale divisions, about half of that employed in the Bombay volumes for
1847 and 1848)having corrected the Monthly Means (as obtained by me
from the table of Daily Means, p. 459, 1847) and allowed for an in
crease of reading at Bombay at the rate of 0*8 small scale divisions
monthly, I have found the following quantities, which are placed
alongside of corresponding means for the same year, deduced by me in a
similar manner from the bifilar observations at Hobarton, Van Die-
man’s Island : —
Variations of Bifilar Monthly Means.
1847 Hobarton. Bombay.
sc. div. sc. div.
January 7 29 6T3
February 3*95 3*2G
March 2-12 (P54
April 0-00 (POO
May 3*73 2-10
June 7*51 5*54
July 6-55 510
August 5-/9 4*91
September F02 2-12
October 2 , 19 DOl
November 3 91 4*03
December 4 51 2*92
These quantities (where the unit is one ten thousandth
of the horizontal force at the respective places) agree pretty well, consi
dering that the determination of the unit co-efficient depends at
both places upon the torsion circle, a method which I have found
to be frequently inaccurate, and that there may be errors at both places
which I have no means of correcting.
I have felt more reason for a careful examination of the erroneous
result as to the magnetic effect of the atmosphere, that I believe it in
some degree attributable to conclusions arrived at by mvself.
About this item
- Content
The Transactions of the Bombay Geographical Society. From January 1863 to December 1864. (Edited by the Secretary.) Volume XVII.
Publication details: Bombay: Printed at the Education Society's Press, Byculla, 1865.
With maps, etc.
- Extent and format
- 1 volume (451 pages)
- Arrangement
This volume contains a table of contents giving headings and page references, and two indexes. There is an index to Volumes I-XVII (1836-1864) in a separate volume (ST 393, index).
- Physical characteristics
Dimensions: 220 x 140mm
- Written in
- English in Latin script View the complete information for this record
Use and share this item
- Share this item
'The Transactions of the Bombay Geographical Society. From January 1863 to December 1864. (Edited by the Secretary.) Volume XVII.' [197] (368/524), British Library: India Office Records and Private Papers, ST 393, vol 17, in Qatar Digital Library <https://www.qdl.qa/archive/81055/vdc_100099749667.0x0000a9> [accessed 16 June 2026]
https://www.qdl.qa/en/archive/81055/vdc_100099749667.0x0000a9
Copy and paste the code below into your web page where you would like to embed the image.
<meta charset="utf-8"><a href="https://www.qdl.qa/en/archive/81055/vdc_100099749667.0x0000a9">'The Transactions of the Bombay Geographical Society. From January 1863 to December 1864. (Edited by the Secretary.) Volume XVII.' [‎197] (368/524)</a> <a href="https://www.qdl.qa/en/archive/81055/vdc_100099749667.0x0000a9"> <img src="https://iiif.qdl.qa/iiif/images/81055/vdc_100085203917.0x000001/ST 393_vol 17_0378.jp2/full/!280,240/0/default.jpg" alt="" /> </a>
This record has a IIIF manifest available as follows. If you have a compatible viewer you can drag the icon to load it.https://www.qdl.qa/en/iiif/81055/vdc_100085203917.0x000001/manifestOpen in Universal viewerOpen in Mirador viewerMore options for embedding images
Copyright: How to use this content
- Reference
- ST 393, vol 17
- Title
- 'The Transactions of the Bombay Geographical Society. From January 1863 to December 1864. (Edited by the Secretary.) Volume XVII.'
- Pages
- front, back, spine, edge, head, tail, front-i, i-r:ii-v, 1, 1a:1b, 2:16, 1:132, 1:18, 18a:18b, 19:206, 206a:206b, 207:256, 256a:256b, 257:340, iii-r:iv-v, back-i
- Author
- Bombay Geographical Society
- Usage terms
- Public Domain