XVI 
CAPTAIN ELLIOT’S MAGNETIC SURVEY OF THE INDIAN ARCHIPELAGO. 
I 
Table i. 
Observatory at Samboangan. — Hourly observations made during th 
Astron. Mean Time") 
of Station. ( 
15. 
16. 
17- 
18. 
19. 
20. 
21. 
22. 
23. 
®*, 
K 
1 -).Mj = l' X 1*000204 + 1'*000204. Declinometer No. i 
Slims 
527*0 
527*3 
527*5 
530*4 
532*4 
528*6 
521*0 
514*0 
512*8 
508 
Means of 6 days ... 
87-83 
87*88 
87-92 
88*40 
88*73 
88*10 
86*83 
85*67 
85*47 ! 
1 
84*i 
Diurnal changes ... 
+ 1'*15 
+ 1'*20 
+ 1'*24 
+ 1'*72 
+ 2'*05 
+ 1'*42 
+ 0'*15 
-l’*01 
t 
1 
-l'*i 
Diurnal oscillation... 
3'-01 
3'*06 
3'*10 
3'* 5 8 
3'*91 
3'*28 
2*01 
0'*85 
0'*65 
O'-i 
Diurnal declination . 
17' 34" 
+ 1° 
17' 37" 
17' 39" 
00 
o 
00 
CO 
GO 
17' 50" 
16' 34" 
15' 24" 
15' 12" 
14' 3' 
a 
II 
|(JS 
+ 
1' X 1*000250 = l'*00025. Declinometer No. I 
Slims 
316*3 
316*6 
316*4 
319-5 
318*4 
259*2 
256*4 
303*4 
303*5 
29;i 
Means of 6 days ... 
52*72 
52*77 
52*73 
53*25 
53*07 
51*84 
51*28 
50*57 
50*58 
49*' 
Diurnal changes ... 
+ 1'*28 
+ 1'*33 
+ 1'*29 
+ 1'*81 
+ 1'*63 
+ 0'*40 
— 0*16 
— 0'*87 
-0'*86 
-]'• 
Diurnal oscillation... 
3'*22 
3'*27 
3'*23 
3'*75 
3'*57 
2'*34 
l'*78 
]'*07 
l'*08 
O'* 
Diurnal declination 
17' 33" 
+ 1° 
17' 36" 
17' 34" 
18' 05" 
17' 54" 
16' 40" 
16 ' 07" 
15' 24" 
15' 25" 
14' ? 
Observatory at Penang. — Hourly observations made during ti 
a^l +Mj = l' X 1*00047= l'*00047. Declinometer No.. 
Sums 
434*1 
434*0 
432*2 
427-3 
424*0 
427-5 
435*7 
444*0 
443*9 
44'£ 
Means of 5 days ... 
86*82 
86*80 
86*44 
85*46 
84*80 
85-50 
87-14 
88*80 
88*78 
Diurnal changes ... 
-0'*76 
-0'*78 
— 1'*14 
— 2'*12 
-2'*78 
-2'*08 
-0'-44 
+ 1'*22 
+ 1'*20 
+ 2 S 
1 
Diurnal oscillation... 
2'*02 
2'*00 
l'*64 
0'*66 
o'*oo 
o’*70 
2*34 
4'*00 
3'*98 
4')( 
Diurnal declination . 
47' 47" 
+ 1° 
47' 46" 
47' 24" 
46' 25" 
45' 46" 
46' 28" 
48' 06" 
49' 46" 
49' 44" 
50 ' ') 
1 
= 1' X 1*00034= l'-00034. Declinometer Nd 
Slims 
258*6 
258*7 
256*7 
251*7 
247*3 
250*7 
258*9 
264*0 
262*8 
2(- 
Means of 5 days ... 
51*72 
51*74 
51*34 
50*34 
49*46 
50*14 
51*78 
52*80 
52*56 
5|7 
1 
Diurnal changes ... 
-0'*16 
-0'*14 
— 0'*54 
-l'*54 
-2’*42 
-l'*74 
— 0'*10 
+ 0'*92 
+ 0'*68 
\ 
Diurnal oscillation... 
2’*26 
2*28 
l'*88 
0'*88 
o'*oo 
0'*68 
2'*32 
3'*34 
3'*]0 
f 
Diurnal declination 
48' 02" 
+ 1° 
48' 04" 
47' 40" 
46' 40" 
45' 47" 
46' 28" 
48' 06" 
49' 07" 
48' 53" 
50'|0 
