518 
The Account of a 
And these subtracted from the observed angles 
(see Sect. n. Art. vii.) give 
* t // 
21 14 10,05 
21 14 10,5 
21 14 10,45 
The mean of which is 21 0 14' 10", 3 for the angle between 
the meridian and the staff, which is a little more than 1" dif- 
ferent from that obtained by the double azimuths ; we shall, 
however, take 2 T 14' 1 i",5 for the true angle. 
art. 11. Of the Direction of the Meridian at Beachy Head with 
respect to Jevington Staff. 
On August 1st, in the morning, the angle be- o , „ 
tween the pole star and the staff was observed 24 38 20,25 
And at night - - - - 30 19 49,5 
Therefore half their sum is the angle between 
the meridian and Jevington staff, namely - 27 29 5 
On August 2d, at night, the angle between 
the star and staff was observed - - 30 19 50,25 
And on August 3d, in the morning - 24 38 23,5 
Therefore half their sum is the angle between 
the meridian and Jevington staff, namely - 27 29 7 
Hence 27 0 29' 6", the mean by the double azimuths, may 
be taken as the angle between the meridian and the staff. 
The apparent polar distances of the star, on those days 
which do not refer to corresponding observations on the op- 
posite side of the meridian, are as follow : Azim. 
July< 
Aug. 
15th 1 48 4,6" 
16th 1 48 4,4 
26th 1 48 2,9 ^ 
30th 1 48 2 
11th 1 47 59,3 
which, with the latitude of 
Beachy Head, viz. 50° 44' 
25" nearly, give the azi- 
muths for those days - 
[25° 49>4 
I 2 50 49>* 
I 2 50 4 6,7 
2 50 45>3 
5041 
