1 
CAPTAIN ELLIOT’S MAGNETIC SURVEY OF THE INDIAN ARCHIPELAGO. 
Oscillation of the Horizontal Intensity at Padang in Sumatra^ 
Astron. Mean Time. 
12. 
13. 
14. 
15. 
16. 
17. 
18. 
19. 
20. 
21. 
22. 
October 1847 
November 

3-81 
1-02 
0-00 
2-36 
7-18 
1-79 
1-63 
3-61 
0-89 
0- 37 
2-00 
6*87 
1- 72 
1-56 
3-28 
1- 09 
0- 93 
2- 04 
7-34 
1- 83 
1-67 
3-82 
1-52 
1- 17 
2- 62 
9-13 
2-28 
2-12 
4-76 
2-88 
2-28 
3-17 
13-09 
3-27 
3-11 
6-76 
4-17 
3- 84 
4- 26 
19*03 
4-76 
4-60 
8-88 
5- 68 
4-53 
6*40 
25-49 
6- 37 
6-21 
11-06 
6-28 
5-83 
7*70 
30-87 
7*72 
7-56 
December 
January 1848 
Sums 
Means 
Oscillation 
Oscillation of the Horizontal Intensity at Singapore, 
November ...1848 
2-41 
2-28 
2-03 
2-41 
2-36 
4-61 
5-25 
6-48 
December 
0-65 
0-71 
0-64 
1-27 
2-14 
2-65 
4-01 
5-35 
Means 
1-53 
1-49 
1-33 
1-84 
2-25 
3-63 
4-63 
5-91 
Oscillation 
1-53 
1-49 
1-33 
1-84 
2-25 
3-63 
4-63 
5-91 
Oscillation of the Horizontal Intensity at Singapore, 
November 1848... 
1-95 
1-59 
1-41 
1-81 
1-96 
5-03 
6-55 
9-19 
December 
0-00 
0-14 
0-05 
0-38 
0-86 
2-76 
4-98 
7-28 
Sums 
1-95 
1-73 
1-56 
2-19 
2-82 
7*79 
11-53 
16-47 
Means 
0-97 
0-86 
0-73 
1-09 
1-41 
3-89 
5-76 
8-23 
Oscillation 
0-81 
0-70 
0-57 
0-93 
1-25 
3-73 
5-60 
8-07 
Mean Hourly Oscillation of the Horizontal Intensity 
December 
0-18 
0-35 
0-49 
0-73 
0-75 
0-76 
1-11 
1-91 
3-20 
4-56 
5-70 
January 
0-34 
0-11 
0-42 
0-36 
0-50 
0-61 
1-12 
1-72 
2-92 
4-30 
5-81 
February 
0-01 
0-09 
0-29 
0-29 
0-50 
0-59 
0-74 
1-36 
2-75 
4-82 
6-14 
Sums 
0-53 
0-55 
1-20 
1-38 
1-75 
1-96 
2-97 
4-99 
8-87 
13-68 
17-65 
Means 
0-18 
0-18 
0-40 
0-46 
0-58 
0-65 
0-99 
1-66 
2-96 
4-56 
5-88 
Oscillation 
0-13 
0-13 
0-35 
0-41 
0-53 
0-60 
0-94 
1-61 
2-91 
4-51 
5-83 
Mean Hourly Oscillation of the Horizontal Intensity 
March 
0-23 
0-39 
0-37 
0-45 
0-57 
0-59 
0-61 
1-43 
3-13 
5-07 
6-56 
April 
0-00 
0-20 
0-48 
0-6 1 
0-73 
0-82 
1-12 
2-35 
4-28 
6-34 
8-12 
May 
0-16 
0-21 
0-21 
0-19 
0-31 
0-49 
1-21 
2-32 
4-03 
5-49 
6-52 
Sums 
0-39 
0-80 
1-06 
1-25 
1-61 
1-90 
2-94 
6-10 
11-44 
16-90 
21-20 
Means 
0-13 
0-27 
0-35 
0-42 
0-54 
0-63 
0-98 
2-03 
3-81 
5-63 
7-07 
Oscillation 
0-07 
0-21 
0-29 
0-36 
0-48 
0-57 
0-92 
1-97 
3-75 
5-57 
7-01 
Mean Hourly Oscillation of the Horizontal Intensity 
June 
0-03 
0-07 
0-17 
0-18 
0-22 
0-35 
1-00 
2-06 
3-46 
4-84 
5-84 
July 
0-12 
0-22 
0-32 
0-21 
0-49 
0-72 
1-33 
2-37 
3-83 
5-12 
5-94 
August 
0-19 
0-53 
0-57 
0-57 
0-81 
0-89 
1-52 
2-54 
4-19 
5-43 
6-57 
Sums 
0-34 
0-82 
1-06 
0-96 
1-52 
1-96 
3-85 
6-97 
11-48 
15-39 
18-35 
Means 
0-11 
0-27 
0-35 
0-32 
0-51 
0-65 
1-28 
2-32 
3-83 
5-13 
6-12 
Oscillation 
0-08 
0-24 
0-32 
0-29 
0-48 
0-62 
1-25 
2-29 
3-80 
5-10 
609 
