368 Mr. Christie on the diurnal deviations of the 
needle does not rest at any point corresponding to those 
which had before been observed. 
Table of the Points of Equilibrium corresponding to the several 
angles between the meridian and the axis of the Magnets, the 
distances of the Magnets from the centre of the Needle remaining 
the same. Wth May, from 6 h A. M. to 9 h A. M. compass No. 1. 
North end of the axis towards East. 
North end of the axis towards West. 
Angle. 
Points of Equilibrium. 
Angle 
Points of Equilibrium. 
0 / 
N. o o E. 
o lO 
O 20 
o 30 
0 40 
N.25 26 W. 
27 58 
29 28 
30 2 
3 1 4 ° 
0 , 
N. 20 10 E. 
not stable 
not stable 
no point 
no point 
S. 2 20 W. 
10 6 
17 48 
no point, 
no point. 
N. 0 oW. 
0 10 
0 20 
0 30 
0 40 
0 50 
N.25 26 W. 
21 l6 
15 IO 
no point 
no point 
no point 
0 / 
N- 20 ioE. 
21 0 
25 32 
2 7 36 
29 56 
3 1 34 
S. 2 20 W. 
S. 4 12 E. 
16 0* 
no point 
no point 
no point 
From the first part of this table it appears, that, if the 
north end of the axis of the magnets described an angle from 
the meridian towards the east, without any change in the 
intensities of the forces which the magnets exerted on the 
needle, or, which amounts to the same thing, if the direction of 
the force urging the north end of the needle deviated towards 
the west , without any change in its intensity, the westerly 
point of equilibrium would move towards the west : and also 
the easterly and southerly points of equilibrium would move to- 
wards the west, until they were lost in the westerly point : so 
that, the directions of the deviations of the easterly and westerly 
points of equilibrium would be both plus, and that of the southerly 
point minus, if, without any change of intensity, the direction 
of the terrestrial force deviated towards the west. From the 
second part it appears, that if the direction of the terrestrial 
* At this point, if the needle was much agitated, it moved towards east. 
