distribution, &c. of the magnetic intensity in ships of war. 
344 
Intensities according to the Sections. 
Name of the 
Maximum 
Direction of the 
Minimum 
Direction of the 
Mean 
Deck. 
. 
Station. 
; 
Intensity. 
Ship’s Head. 
Station. 
' 
Intensity. 
Ship’s Head. 
Intensity. 
Starboard Section. 
r= ; 
Upper Deck, 
V 
107.98 
NNE 
F' 
89.64 
SSE 
IOO.69 
Main Deck, 
B" 
IS 4-36 
SE by E|E 
r 
92.50 
W£S 
II5.79 
Lower Deck, 
L'" 
II5.49 
SWJW 
H"' 
69.96 
W by SIS 
96.58 
Middle Section. 
Upper Deck, 
W 
1 19.54 
NE by NJE 
r 
80.29 
N by EfE 
100.98 
Main Deck, 
&" 
108.47 
SE by E|E 
a" 
97.90 
E by NLN 
103.78 
Lower Deck, 
y‘" 
128.15 
SW|S 
x"' 
74-83 
W 
IO4.O4 
Larboard Section. 
Upper Deck, 
a' 
II8.68 
SSW|W 
o' 
S2.80 
N by EfE 
96.58 
Main Deck, 
l" 
121.28 
SW byS 
b" 
71.07 
E|N 
98.70 | 
Lower Deck, 
h’“ 
I 3 S -63 
WfS 
i" 
95*71 
WfN 
II4.27 
It also appears from the preceding table, that the mean 
intensity of the stations assumed in the middle section in- 
creases from the upper to the lower deck ; the intensity aug- 
menting however in a greater ratio from the upper to the 
main deck, than from the main to the lower deck. The mean 
intensity likewise in the starboard section increases consider- 
ably from the upper to the main deck ; but from the last men- 
tioned deck to the lower it diminishes in a still greater ratio. 
In the larboard section, however, there is a small increase of 
the intensity from the upper to the lower deck, amounting 
to nearly the same quantity as in the middle section ; but from 
the main to the lower deck, the rapidity of increase is very 
considerable. 
