XXVlll 
CAPTAIN ELLIOT’S MAGNETIC SURVEY OF THE INDIAN ARCHIPELAGO. 
Table A 
Observatory at Singapore. — Hourly observations made during the 
Astron.Mean Time"! 
of Station. J 
15. 
16. 
17. 
18. 
19. 
20. 
21. 
22. 
23. 
0. 
II 
+ 
1' X 1-000305 = 1'*000305. Declinometer No. I. 
Sums 
203-3 
199-5 
195-0 
181-9 
170-0 
172-9 
187-9 
201-7 
213-6 
228-€ 
Means of 14 days ... 
14-52 
14*25 
13-93 
12-99 
12-14 
12-35 
13-42 
14-41 
15-26 
16-33 
Diurnal changes ... 
— 0'-30 
-0'-57 
-0'-89 
— 1'-83 
-2'-68 
-2'-47 
— 1'-40 
— 0'-41 
+ 0'-44 
+ 1'-51 
Diurnal oscillation... 
2-38 
2'-ll 
l'-79 
0'-85 
o'-oo 
0'-21 
l'-28 
2'*27 
3'-12 
4'-19 
Diurnal declination . 
36' 35" 
36' 20" 
36' 00" 
35' 03" 
34' 12" 
34' 25" 
35' 29" 
36' 28" 
37' 19" 
38' 24' 
+ 1° 
a( 
1' X 1-000371 = 1'-000371. Declinometer No. 11 
Sums 
706-0 
703-0 
699-4 
686-0 
667-9 
668-5 
685-9 
702-9 
717-7 
731-3 
Means of 14 days ... 
50-43 
50-21 
49-96 
49-00 
47-71 
47-75 
48-99 
50-21 
51-26 
52-2J 
Diurnal changes ... 
— 0'-31 
— 0'-53 
— 0'-78 
— 1'-74 
-3-03 
-2'-99 
— 1'-75 
-0'-53 
+ 0'-52 
+ 1'-5C 
Diurnal oscillation... 
2'-72 
2'-50 
2'-25 
l'-29 
O'-OO 
0'*04 
l'-28 
2'-50 
3'-55 
4'-5a 
Diurnal declination . 
36' 55" 
36' 42" 
36' 27" 
35' 30" 
34' 12" 
34' 15" 
35' 29" 
36' 42" 
37' 45" 
38' 44' 
+ 1° 
a^l+^j = l'-0047x 1-00037= l'-004. Declinometer No. IIL 
Sums 
1375-0 
1371-5 
1366-4 
1353-7 
1340-6 
1344*2 
1358-9 
1373-7 
1385-9 
1401-C 
Means of 14 days ... 
98-21 
97-96 
97-60 
96-69 
95-76 
96*01 
97-06 
98-12 
98-99 
100-07 
Diurnal changes 
— 0'-32 
1 
0 
-0'-93 
-l'-84 
-2'-77 
— 2'-52 
— 1'*47 
-0'-41 
+ 0'-46 
+ l'-54 
Diurnal oscillation ... 
2'-45 
2'-20 
l'*84 
0'-93 
O'-OO 
0'-25 
l'-30 
2'-36 
3'-23 
4'-31 
Diurnal declination . 
36' 38" 
36' 23" 
36' 01" 
35' 09" 
CO 
34' 26" 
35' 29" 
36' 33" 
37' 25" 
38' 30" 
+ 1° 
a^l+^^ = l' 0005 X l-0003 = l'-0008. Declinometer No. IV. 
Sums 
1345-2 
1341-9 
1337-5 
1325-9 
1308-3 
1306-9 
1320-3 
1335-2 
1347-9 
1363-4 
Means of 14 days ... 
96-09 
95 85 
95-54 
94-71 
93-45 
93-35 
94-31 
95-37 
96-28 
97-39 
Diurnal changes ... 
-0'-06 
-0-30 
— 0'-6l 
— 1'-44 
— 2'-70 
-2'-80 
— 1'-84 
— 0'-78 
+ 0'-13 
+ l'-24 
Diurnal oscillation... 
2'-74 
2'-50 
2'- 19 
1'-36 
0'*10 
O'-OO 
0'-96 
2'-02 
2'-93 
4'-04 
Diurnal declination . 
37' 16" 
37' 01" 
36' 43" 
35' 53" 
34' 37" 
34' 31" 
35' 29" 
36' 33" 
37' 27" 
38' 34'' 
+ 1° 
