ON AN IRON STEAM-VESSEL, 
271 
Table II. 
Showing the Deviation of the Horizontal Needle (or Local Attraction) at the posi- 
tions A and B on board the Garryowen, as deduced from the true magnetic Bearing 
of the Cone of a distant mountain and the bearings of it observed on board, when 
the vessel’s head was at each point of the Compass, together with the Deviation, 
deduced from Simultaneous Bearings. 
Barometer. 
Thermometer. g 
True mag- 
netic direc- 
tion of the 
vessel’s head. 
Observations at position A on board. 
Simultaneous bearings from A on board 
with the station X on shore. 
Observations at position B. 
True magnetic 
bearing of the 
cone of Dico- 
mede. 
Bearings of the 
cone of Dico- 
mede from A. 
Deviation or 
local attrac- 
tion at A. 
True magnetic 
bearings of A 
from X. 
Bearings of the 
station X 
from A. 
Deviation or 
local attrac- 
tion at A. 
True magnetic 
bearing of the 
cone of Dico- 
mede. 
Bearing of the 
cone from B. 
Deviation or 
local attrac- 
tion at B. 
29-9 
o 
52- 
North. 
N. by E. 
N.N.E. 
N.E.by N. 
N.E. 
N.E. by E. 
E.N.E. 
E. by N. 
N. 64 50 E. 
N. 74 15 E. 
73 20 
74 50 
75 30 
J 79 0 
\75 10 a 
74 10 
73 45 
74 45 
o / 
9 25 + 
8 30 
10 0 
10 40 
= 14 10 1 
= 10 20 a J 
9 20 
8 55 
9 55 
N. 66 lo' E. 
65 50 
65 30 
65 15 
64 50 
64 40 
64 15 
64 5 
S. 75 30 W. 
- 76 30 
74 20 
74 40 
75 15 
74 50 
72 40 
72 50 
o / 
9 20 + 
10 40 
8 50 
9 25 
10 25 
10 10 
8 25 
8 45 
N. 64 50 E. 
N. 74 15 E. 
75 30 
75 0 
Not ob 
75 30 
74 45 
75 0 
74 50 
O / 
9 25 
10 40 
10 10 
served. 
10 40 
9 55 
10 10 
10 0 
74 0 
9 10 
63 55 
72 20 
8 25 
74 20 
9 30 
E. by S. 
73 10 
8 20 
63 30 
71 30 
8 0 
73 45 
8 55 
E.S'.E. 
72 5 
7 15 
63 15 
70 10 
6 55 
73 10 
8 20 
S. E. by E. 
70 25 
5 35 
63 15 
69 25 
6 10 
71 30 
6 40 
s.e'. 
69 25 
4 25 
63 5 
67 20 
4 15 
69 0 
4 10 
S.E.bv S. 
67 0 
2 10 
63 10 
64 20 
1 20+ 
67 0 
2 10+ 
S. S.E 
65 0+ 
0 10+ b 
63 15 
62 50 
0 25- 
64 30 
0 10- 
L 
S. by E. 
61 30- 
3 20 — c 
63 8 
62 20 
0 48 
GO 20 
4 30 e 
58 50 
6 0 
63 20 
60 10 
3 10 
58 20 
6 30 
S. by W. 
56 20 
8 30 
63 35 
55 0 
8 35 
54 50 
10 0 
s.s.w. 
54 40 
10 10 
63 45 
53 20 
10 25 
52 30 
12 20 
S.W. by S. 
52 0 
12 50 
64 0 
51 40 
12 20 
49 20 
15 30 
s.w'. 
51 30 
13 20 
64 12 
50 45 
13 27 
S.W. by W. 
51 20 
13 30 
64 35 
50 20 d 
14 15 
46 45 
18 5 
W.S.W. 
50 40 
14 10 
64 55 
50 10“ 
14 45 
44 30 
20 20 
W. by S. 
52 0 
12 50 
65 20 
52 20 d 
13 0 
48 10 
16 40 
30-1 
55 
54 0 
10 50 
65 35 
54 40 
10 55 
52 40 
12 10 
W. by N. 
57 50 
7 0 
65 45 
60 0 
5 45 
56 50 
8 0 
W.N.W. 
61 0 
3 50- 
66 3 
62 50 
3 13 
60 50 
4 0- 
N.W. byW. 
63 40 
1 10- 
66 8 
65 50 
0 18- 
66 0 
1 10+ 
N.W. 
67 45 
2 55+ 
66 20 
69 40 
3 20+ 
68 35 
3 45 ' 
N.W. by N. 
70 0 
5 10 
66 25 
72 20 
5 55 ’ 
71 50 
7 0 
N.N.W. 
71 40 
6 50 
66 26 
73 30 
7 4 
74 20 
9 30 
N. by W. 
73 10 
8 20 
66 27 
75 40 
9 13 
76 0 
11 10 
L 
North. 
N. 64 50 E. 
N. 74 15 E. 
9 25 
N. 66 15 E. 
S. 76 20 W. 
10 5 
74 10 
9 20 
The time of each observation was noted by 
Fires extinguished. 
watches regulated to the same time, as a ch eck 
Fires extinguished. 
on the observation.— Fires extinguished. 
Note. — Oct. 21. Moderate breezes from S.S.W. — Oct 27. Moderate breezes from the north, with slight showers. 
a Repeated Oct. 27, and found to be 75° 10L b Vessel sheering more than 1°. c Hawser broke. 
d Station X not seen through the compass vanes, but a mark was placed on the paddle-box, and ascertained to be in a line with 
it was observed. 
e Hawser broke. 
After vibrating the needles during the above observations, I observed that both the compasses at A and B 
were occasionally embarrassed in their movements. 
