xlii 
CAPTAIN ELLIOT’S MAGNETIC SURVEY OF THE INDIAN ARCHIPELAGO 
Table A. 
Observatory at Batavia. — Hourly observations made during the 
Astron. Mean Time 1 
of Station. J 
15. 
16. 
17. 
18. 
19. 
20. 
21. 
22. 
23. 
0. 
l+^^=l'x 1-000139= l'-000139. Declinometer No. II. 
Sums 
1361-5 
1354-4 
1343-8 
1339-0 
1322-7 
1299-9 
1305-5 
1321-2 
1347-3 
1370-4 
Means of 21 days ... 
50-43 
50-16 
49-77 
49-59 
48-99 
48-14 
48-35 
48-93 
49-90 
50-76 
Diurnal changes ... 
o'-o 
_0'-2 
-0'-6 
-0'-8 
_l'-4 
— 2'-3 
— 2'-l 
— 1'-5 
-0'-5 
+ 0'-4 
Diurnal oscillation... 
2'-3 
2'-l 
l'-7 
l'-5 
0'-9 
O'-O 
0'-2 
0'-8 
l'-8 
2'-7 
Diurnal declination . 
49' 13" 
49' 01" 
48' 37" 
48' 25" 
47' 49" 
46' 55" 
47' 07" 
47' 43" 
48' 43" 
49' 57" 
+ 0° 
Observatory at Batavia. — Hourly observations made during the 
a 
1' X 1-000158 = 1'-000158. Declinometer No. I. 
Sums 
2157-6 
2155-3 
2150-7 
2152-2 
2138-6 
2112-0 
2006-4 
2098-4 
2118-0 
2139-6 
Means of 26 days ... 
82-98 
82-90 
82-72 
82-78 
82-25 
81-23 
80-26 
80-71 
81-46 
82-29 
Diurnal changes 
+ 0'-5 
+ 0'-4 
+ 
o 
+ 0'-3 
-0'-3 
-l'-3 
— 2'-2 
-l'-8 
-I'-O 
— 0'-2 
Diurnal oscillation... 
2'-7 
2'-6 
2'-4 
2'-5 
l'-9 
0'-9 
O'-O 
0'-4 
l'-2 
2'-0 
Diurnal declination . 
49' 49" 
49' 43" 
49' 31" 
49' 37" 
49' 01" 
GO 
0 
47' 07" 
CO 
48' 19" 
49' 07" 
+ 0° 
i 
1 = 1' X 1-000139= I'-OOO 139. Declinometer No. II. 
Sums 
1305-6 
1302-3 
1296-5 
1295-8 
1283-9 
1254-3 
1184-3 
1244-8 
1265-2 
1293-1 
Means of 26 days ... 
50-22 
50-09 
49-87 
49-84 
49-38 
48-24 
47-37 
47-88 
48-66 
49-73 
Diurnal changes ... 
+ 0'-3 
+ 0'-2 
O'-O 
— O’-l 
-0'-5 
-l'-7 
-2'-5 
— 2'-0 
— 1'-2 
-0'-2 
Diurnal oscillation... 
2'-8 
2'-7 
2'-5 
2'-4 
2'-0 
0'-8 
O'-O 
0'-5 
l'-3 
2'-3 
Diurnal declination 
49' 55" 
49' 49" 
49' 37" 
49' 31" 
49' 07" 
47' 55" 
47' 07" 
47' 37" 
48' 25" 
49' 25" 
+ 0° 
Observatory at Batavia. — Hourly observations made during the 
afl +_J = U X 1'000158 = 1'*000158. Declinometer No. I. 
Sums 
2189-2 
2190-6 
2192-6 
2202-7 
2203-6 
2178-1 
1826-7 
2147-6 
2148-3 
2149-9 
Means of 26 days ... 
84-20 
84-25 
84-33 
84-72 
84-75 
83-77 
83-03 
82-60 
82-63 
82-69 
Diurnal changes ... 
+ 0'-3 
+ 0'-3 
+ 0'-4 
+ 0'-8 
+ 0'-8 
-O'-l 
-0'-9 
— 1'-3 
— 1'-3 
— 1'-2 
Diurnal oscillation... 
l'-6 
l'-6 
i'-7 
2'-l 
2-1 
l'-2 
0'-4 
O'-O 
O'-O 
O'-l 
Diurnal declination . 
43' 19" 
+ 0° 
CO 
48' 25" 
48' 49" 
48' 49" 
47' 55" 
47' 07" 
46' 43" 
46' 43" 
46' 49" 
