xliv 
CAPTAIN ELLIOT’S MAGNETIC SURVEY OF THE INDIAN ARCHIPELAGO 
Table A. 
Observatory at Batavia. — Hourly observations made daring the 
Astron. Mean Time 1 
of Station. j 
15. 
16. 
17. 
18. 
19. 
20. 
21. 
22. 
23. 
0. 
a 
II 
+ 
1' X 1-000139= l'-000139. Declinometer No. II. 
Sums 
1318-8 
1319-5 
1319-3 
1327-7 
1326-9 
1305-1 
1089-0 
1277-9 
1280-0 
1289-4 
Means of 26 days ... 
50-72 
50-75 
50-74 
51-07 
51-03 
5020 
49-50 
49-15 
49-23 
49-59 
Diurnal changes ... 
O'-O 
O'-O 
O'-O 
+ 0'-4 
+ 0'-3 
-0'-5 
-l'-2 
-l'-6 
— 1'-5 
-I'-l 
Diurnal oscillation... 
l'-6 
l'-6 
l'-6 
2'-0 
l'-9 
l'*l 
0'-4 
O'-O 
O'-l 
0'-5 
Diurnal declination . 
48' 19" 
+ 0° 
48' 19" 
00 
48' 43" 
48' 37" 
47' 49" 
47' 07" 
46' 43" 
46' 49" 
47' 13" 
Observatory at Batavia. — Hourly observations made during the 
a 
+ 
II 
= l'xl-000158 = l'-000158. Declinometer No. I. 
Sums 
2164-8 
2167-1 
2169-6 
2094-5 
2110-8 
2093-2 
1742-3 
2063-1 
2142-8 
2145-2 1 
Means of 26 days ... 
83-26 
83-35 
83-45 
83-78 
84-43 
83-73 
00 
82-52 
82-42 
82-51 
Diurnal changes ... 
O'-O 
+ 0'-l 
+ 0'-2 
+ 0'-5 
+ 1'-1 
+ 0'-4 
— 0'-3 
— 0'-3 
-0'-9 
-0'-8 
Diurnal oscillation... 
0'-9 
I'-O 
I'-l 
l'-4 
2'-0 
l'-3 
0'-6 
0'-6 
O'-O 
O'-l 
Diurnal declination . 
47' 25" 
+ 0° 
47' 31" 
47' 37" 
47' 55" 
48' 31" 
47' 49" 
47' 07" 
47' 07" 
46' 31" 
46' 37" 
11 
+ 
1' X 1-000139 = 1'-000139. Declinometer No. II. 
Suras 
1338-9 
1342-2 
1341-8 
1298-3 
1311-7 
1296-3 
1075-0 
1273-7 
1326-2 
1332-4 
Means of 26 days ... 
51-50 
51-62 
51-61 
51-93 
52-47 
51-85 
51-19 
50-95 
51-01 
51-25 
I Diurnal changes ... 
-0'-6 
— 0-5 
-0'-5 
— 0'-2 
+ 0'-4 
— 0'-3 
-0-9 
— 1'-2 
-I'-l 
-0'-9 
Diurnal oscillation... 
0'-6 
0-7 
0-7 
I'-O 
l'-6 
0'-9 
0-3 
O'-O 
O'-l 
0'-3 
Diurnal declination 
47' 25" 
+ 0° 
47' 31" 
47' 31" 
47' 49" 
48' 25" 
47' 43" 
47' 07" 
46' 49 " 
46' 55" 
47' 01" 
Observatory at Cocos Island. — Hourly observations made during the Month of 
"■ 
+ = U X l’000305 = l'‘000305. Declinometer No. I. 
Sums 
2366-0 
2370-4 
2369-5 
2380-2 
2368-1 
2324-8 
2287-9 
2277-4 
2287-6 
2316-2 
Means of 27 days ... 
87-63 
87-79 
87-76 
88-16 
87-71 
86-10 
84-74 
84-35 
84-73 
85-79 
1 
Diurnal changes ... 
+ 0'-53 
+ 0-69 
+ 0'-66 
+ l'-06 
+ 0'-6l 
-I'-OO 
— 2’-36 
-2'-75 
— 2'-37 
— 1'-21 
Diurnal oscillation... 
3'-28 
3'-44 
3'-41 
3'-81 
3'-36 
l'-75 
0'-39 
O'-OO 
0'-38 
l'-44 
Diurnal declination . 
07' 49 " 
-1° 
07' 39 " 
0 
07' 17 " 
07' 44" 
09 ' 20" 
10' 42" 
11' 05" 
10' 43" 
9' 39 " 
