138 
VICE-ADMIRAL SIR C. SIT A DWELL ON TERRESTRIAL MAGNETISM. 
In arranging the observations, after first recording in Table I. those taken on the 
voyages out and home, 1871 and 1875, to and from Singapore, I have given in Table II. 
those taken in the Eastern Seas, in order of the latitudes of the stations visited ; but in 
all cases where the observations have been subsequently repeated at the same station I 
have noted all the results obtained at the same place in the Table in succession. 
Finally, I have briefly compared the results of some of the observations here given • 
with those made by me at the same stations at former periods, and have added such 
remarks as the comparisons suggested. 
Table I. 
No. 
Poles 
No. 
Date and time. 
Station. 
of 
nee- 
direct 
and 
Mean dip. 
Mean 
concluded dip. 
Pemarks. 
die. 
reversed. 
1. 
1871. Oct. 9- 
Malta, 
1. 
51 50-7 
}5i 
42-7 
] O , 
Taken near Isola Point, 
6.30 a.m. 
35° 53' n., 14° 31' e. 
51 34-7 
[ 51 42*5 N. 
south side of the Fortifi- 
7.20 „ 
o 
51 56*4 
51 28-4 
I 51 
42-4 
J 
cation Wall. 
2. 
1875. Apr. 10. 
Same. 
i. 
51 38-8 
l 51 
39-5 
1 
3.40 a.m. 
51 40’8 
J 
J* 51 38*9 N. 
Ditto. 
6.30 „ 
2, 
51 40-4 
51 36-4 
I 61 
38-4 
3. 
1875. Mar. 31. 
Port Said, Egypt, 
31° 16'n., 32° 19' e. 
1. 
42 29-5 
j 42 
35*2 
I 
3.10 p.m. 
42 41 
^ 42 38-3 n. 
J 
Taken 200 yards N.W. of 
4.10 „ 
o 
42 44-1 
l 42 
41-4 
the Lighthouse. 
42 38-8 
J 
4. 
1871. Oct. 24. 
Suez, Egypt, 
40 52-6 
| 40 
54-3 
] 
3. 0 p.m. 
29° 57' n., 32° 34' e. 
1. 
40 56 
l 40 54*5 n. 
Taken at Observation Spot, 
3.45 „ - 
2. 
40 1*2 
40 48-2 
j> 40 
54-8 
North Pier of Dock. 
5. 
1875. Mar. 23. 
Same. 
40 48-4 
| 40 
53-3 
) 
3.40 p.m. 
40 58-2 
l 40 51*9 N. 
Ditto. 
4.30 „ 
2. 
40 55*5 
40 45*8 
| 40 
50-6 
6. 
1871. Nov. 7. 
Aden, 
6 13-3 
1 6 
10-1 
\ 
10.20 A.M. 
12°46'n., 45° 5' e. 
L 
6 6-9 
1 6 
i 6 10 n. 
Near a detached Bungalow 
11. 0 „ 
2o 
6 23-4 
5 56*5 
I 6 
9-9 
at the Residency. 
7. 
1875. Mar. 13. 
6. 0 A.M. 
Same. 
1. 
6 0-1 
6 9-8 
} 6 
4*9 
1 6 8*3 n. 
Ditto. 
6.50 „ 
2. 
6 16*4 
6 7-2 
} 6 
11*8 
J 
8. 
1871. Nov. 30. 
Point de Galle, 
i. 
7 47 
1 7 
47*8 
10.30 A.M. 
6° 2' n., 80° 13' e. 
7 48-7 
J 7 
| 7 44 s. 
In the Garden of the 
11.30 „ 
2. 
7 35-9 
7 44*S 
7 
j 
40*3 
Queen’s House. 
9- 
1875. Feb. 23. 
Same. 
1. 
8 0-7 
I 7 
50*3 
) 
Same place, now become 
3. 0 p.m. 
7 39-9 
7 35-8 
7 50-9 
i 
l 7 46*8 s. 
the property of Messrs. 
3.40 ,, 
2. 
} 7 
43*3 
J 
Clark, Spence, and Co. 
10. 
1875. Feb. 17. 
Trincomalee, Ceylon, 
1. 
1 59-9 
1 i 
54*5 
] 
Under a Banyan tree, N.E. 
side of the Admiralty 
10.10 A.M. 
8°34'n., 81° 13' e. 
1 49-2 
J 
l 1 52*4 s. 
11. 0 „ 
2. 
1 44*1 
1 56*6 
} 1 
50*3 
J 
House. 
