IV 
CAPTAIN ELLIOT’S MAGNETIC SURVEY OF THE INDIAN ARCHIPELAGO 
Oscillation of Declination at Singa- 
Astron. Mean Time. 
12. 
13. 
14. 
15. 
16. 
17. 
18. 
19. 
20. 
21. 
22. 
November 1848... 
/ 
2*27 
3-02 
2-40 
l'-52 
6-16 
6-00 
6-85 
1-96 
Dee.emher 
2-74 
2-50 
2-19 
1-36 
0-10 
0-00 
0-96 
2-02 
Sums 
501 
5-52 
4-59 
2-88 
0-26 
0*00 
1*81 
3-98 
Mpans 
2-50 
2-76 
2-29 
1-44 
0-13 
0-00 
0-90 
1*99 
Oscillation 
2-50 
2-76 
2-29 
1-44 
0-13 
0-00 
0-90 
1-99 
No. 
November 1848... 
2-20 
1*99 
1-66 
0-76 
0-38 
0-00 
M4 
2-24 
December 
2-26 
2*05 
1-80 
0-80 
0-00 
0-43 
1*21 
2-12 
Slims 
4*46 
4-04 
3-46 
1-56 
0-38 
0-43 
2-35 
4-36 
Means 
2-23 
2*02 
1*73 
0-78 
0-19 
0-21 
M7 
2*18 
Oscillation 
2-04 
1-83 
1-54 
0-59 
0-00 
0-02 
0-98 
1-99 
Oscillation of the Declination at Batavia in 
Java, 
November 1846... 
2-3 
1*9 
2-0 
1-8 
1-7 
1*7 
0-8 
0-2 
0-0 
0-4 1 
M 
December ,. 
2-6 
2*5 
2-5 
2-3 
2*2 
1-8 
M 
0-1 
0-0 
0-4 1 
1-4 
January 1847... 
2-2 
2-3 
2*1 
2-6 
2*5 
2-2 
1-7 
0*3 
0-0 
0-4 
0-9 
February 
2-7 
2-8 
2-7 
3-3 
3-4 
3-4 
3*3 
2*0 
0-7 
0-0 
0-3 
Sums 
9-8 
9-5 
9-3 
10-0 
9-8 
9-1 
6-9 
2-6 
0*7 
1-2 
3-7 
Means 
2-45 
2-37 
2-32 
2*50 
2-45 
2-27 
1-72 
0-65 
0-17 
0-30 
0-92 
Oscillation 
2-28 
2-20 
2-15 
2'33 
2-28 
2-10 
1*55 
0-48 
0-00 
0-13 
0-75 
Oscillation of the Declination at Batavia in Java, 
March 1847... 
1-8 
1-6 
1*4 
1-3 
0-7 
0-0 
M 
0-7 
A pvil 
2-7 
2-6 
2-4 
2-5 
1-9 
0*9 
0*0 
0-4 
M av 
1-6 
1*6 
1-7 
2*1 
2-1 
1-2 
0-4 
0*0 
•Tnnp 
0-9 
1-0 
1-1 
1-4 
2-0 
1-3 
0-6 
0-6 
Slims 
7*0 
6-8 
6-6 
7-3 
6-7 
3*4 
2-1 
1-7 
IVTpnns 
1-75 
1*70 
1-65 
1-82 
1-67 
0*85 
0-52 
0-42 
Oscillation 
1-33 
1-28 
1-23 
1*40 
1-25 
0-43 
0-10 
0-00 
Oscillation of the Declination at Sarawak in Borneo, 
June 1846... 
1-17 
1-38 
1-61 
1-79 
1-83 
2-02 
2-52 
3-24 
2-70 
1-73 
0-96 
July 
0-80 
0-93 
1-24 
1-42 
1-63 
1-77 
2-27 
2-92 
2-36 
1-43 
0-75 
August 
M8 
1-22 
1-33 
1-55 
1-70 
1-88 
2-58 
3-64 
3'09 
]-67 
M9 
Sums 
3*15 
3-53 
4-18 
4-76 
5*l6 
5-67 
7-37 
9-80 
8-15 
4-83 
2-90 
Means 
1-05 
1-18 
1-39 
1-59 
1-72 
1-89 
2-46 
3-27 
2-72 
1-61 
0-97 
Oscillation 
1-00 
1-13 
1-34 
1*54 
1-67 
1-84 
2-41 
3-22 
2-67 
1-56 
0-92 
Oscillation of the Declination at Padang in Sumatra, 
October 1847.. 
1-61 
1‘53 
1-55 
1-43 
M2 
0-68 
0-48 
0-00 
1-82 
1-84 
1-54 
0-83 
0-00 
0-13 
0-18 
0-69 
2-78 
2-69 
2*36 
1-67 
0-61 
0-00 
0-46 
M6 
January 1848.. 
2-22 
2-07 
1*85 
1-08 
0”17 
0-00 
0-37 
0*76 
' 
8*43 
8-13 
7-30 
5-01 
1-90 
0*81 
1-49 
2-51 
1 
2-11 
2-03 
1-82 
1-25 
0*47 
0-20 
0-37 
0-65 
! 
Oscillation 
1-9] 
1-83 
1-62 
1*05 
0-27 
0-00 
0*17 
0-45 
1 

