XX 
CAPTAIN ELLIOT’S MAGNETIC SURVEY OF THE INDIAN ARCHIPELAGO. 
Table A 
Observatory at Sarawak. — Hourly observations made during the 
Astron. Mean Time T 
of Station. J 
12. 
13. 
14. 
15. 
16. 
17. 
18. 
19. 
20. 
21. 
22. 
23. 
0. 
a(l +Mj = l' X 1-000158=1'-000158. 
Declinometer No. I. 
Sums 
2229'2 
2234-8 
2240-6 
2245-4 
2246-4 
2251-4 
2264-4 
2283-1 
2269-0 
2243-8 
2223-3 
2209-7 
2200-J 
Means of 26 days ... 
85-74 
85-95 
86-18 
86-36 
86-40 
86-59 
87-09 
87-81 
87-27 
86-30 
85-51 
84-99 
84-6.‘ 
Diurnal changes ... 
-0'-03 
+ 0'-18 
+ 0'-41 
+ 0'-59 
+ 0'-63 
+ 0'-82 
+ l'-32 
+ 2'-04 
+ l'-50 
+ 0'-53 
-0'-26 
-0'-78 
-I'-H 
Diurnal oscillation... 
i'-]7 
l'-38 
l'-6l 
l'-79 
l'-83 
2'-02 
2'*52 
3'-24 
2'-70 
l'-73 
0'-96 
0'-42 
O'-Oi 
Diurnal declination . 
09' 06" 
09' 19" 
09' 33" 
09' 44" 
09' 46" 
09' 57" 
10' 27" 
11' 11" 
10' 38" 
09' 40" 
08' 53" 
08' 21" 
08' 01 
+ 1° 
j = l'xl-000139 = l'-000139. 
Declinometer No. II. 
Sums 
1364-1 
1369-1 
1374-1 
1377-0 
1377-0 
1380-7 
1393-0 
1411-1 
1395-8 
1373-4 
1358-0 
1351-8 
1295-( 
Means of 26 days ... 
52-47 
52-66 
52-85 
52-96 
52-96 
53-10 
53-58 
54-27 
53-68 
52-82 
52-23 
51-99 
51-8i 
Diurnal changes ... 
-0'-28 
-0'-09 
+ 0'-10 
+ 0'-21 
+ 0'-21 
+ 0'-35 
+ 0'-83 
+ l'-52 
+ 0'-93 
+ 0'-07 
-0'-52 
-0'-76 
-o'-9; 
Diurnal oscillation . 
0-65 
0'-84 
l'-03 
l'-14 
l'-14 
l'-28 
1'-76 
2'-45 
l'-86 
I'-OO 
0'-41 
0'-17 
0'-0( 
Diurnal declination . 
09' 19" 
09' 30" 
09' 42" 
09' 48" 
09' 48" 
09' 57' 
10' 26" 
11' 07" 
10' 32" 
09' 40" 
09' 05" 
08' 50" 
08' 40' 
+ 1° 
Hourly observations made during 
a^l+5j = l'x 1-000158 = 1'-000158. 
Declinometer No. I. 
Sums 
2342-0 
2345-6 
2353-9 
2358-7 
2364-4 
2368-3 
2381-6 
2399-3 
2384-0 
2358-9 
2340-6 
2328-1 
2322-' 
Means of 27 days ... 
86-74 
86-87 
87-18 
87-36 
87-57 
87-71 
88-21 
88-86 
88-30 
87-37 
86-69 
86-23 
86-OS 
Diurnal changes 
-0'-20 
-0'-07 
+ 0'-24 
+ 0'-42 
+ 0'-63 
+ 0'-77 
+ l'-27 
+ l'-92 
+ T-36 
+ 0'-43 
-0'-25 
-0'-71 
-0'-9S 
Diurnal oscillation... 
0'-80 
0'-93 
T-24 
T-42 
l'-63 
i'-77 
2'-27 
2'-92 
2'-36 
T-43 
0'-75 
0'-29 
O'-OJ 
Diurnal declination . 
09' 02' 
09' 10" 
09' 29" 
09' 39" 
09' 52" 
10' 00" 
10' 30" 
IT 09" 
10' 36" 
09' 40" 
09' 59" 
09' 32" 
08' 19' 
+ 1° 
<'4 
^ = 1' X 1-000139 = 1'-000139. 
Declinometer No. II. 
Sums 
1425-1 
1426-0 
1450-9 
1434-7 
1436-2 
1435-6 
1442-6 
1455-7 
1387-4 
1416-8 
1400-0 
1399-1 
1395- 
Means of 25 days ... 
57-00 
57*04 
58-04 
57-39 
57-45 
57-42 
57-70 
58-23 
57-81 
56-67 
56-00 
55-96 
55-8.^ 
Diurnal changes 
-0'-07 
-0'-03 
+ 0'-97 
+ 0'-32 
+ 0'-38 
+ 0'-35 
+ 0'-63 
+ 1'-16 
+ 0'-74 
— 0'-40 
-T-07 
-T-11 
-T- 2 I 
1 
Diurnal oscillation... 
l'-19 
l'-23 
2'-23 
l'-58 
l'-64 
l'-6l 
l'-89 
2'-42 
2'-00 
0'-86 
0'-19 
0'-15 
0'-0| 
Diurnal declination 
9' 00" 
10' 02" 
11' 02" 
10' 23" 
10' 27" 
10' 25" 
10' 42" 
IT 14" 
10' 48" 
9' 40" 
9' 00" 
8' 57" 
8' 49 
+ 1° 
