[ 487 3 
By }} Urfae Majoris 
Latitude deduced 
1769 
Polar dill. 
90 Arch 
96 Arch 
0 i n 
0 1 If 
"Oil/ 
January i 
59 31 35 
58 47 10 
58 47 8 
2 
58 47 2 
58 47 14 
The means 
of thefe are 
58 47 6 
58 47 ” 
The means of all the comparifons of ^Urfse Majoris 
Ditto of n UrfsE Majoris (confidered as circumpolar) 
Ditto of Capella ditto 
Ditto of a Perfei ditto 
Ditto of the Pole dar 
The means of all the circumpolar dars are 
0 / // 
58 47 304 
58 47 32 
58 47 29 
58 47 28| 
58 47 16 
Of// 
58 47 51I 
58 47 48 
58 47 37 i 
58 47 33I 
58 47 28 ‘ 
58 47 27 
58 47 39i 
The means of a Urfae Majoris 
Ditto of y 
Ditto of n 
The means of all the liars taken on the northern meridian are 
58 47 
58 46 55 j 
58 47 6 
58 47 
58 47 I2f 
58 47 II 
58 47 2,4 
58 47 137 
And the means of the above two are 
58 47 14I 
58 47 26f 
The means of all thefolar obfervations are 
Ditto of Capella taken on the fouthern meridian alone 
Ditto of a. Perfei 
Ditto of « Lyras 
Ditto of « Aquilas 
Ditto of a Cygni 
Ditto of Capella after the line of Collimation altered 
Ditto of a. Perfei ditto 
Ditto of (3 Draconis, the line of collimation having again altered 
Ditto of y 
The means of all the obfervations taken fouthward of the zenith are 
The means of the circumpolar and northern liars 
And, by taking the mean of both, the latitude is North 
58 48 !_? 
58 47 485 ■ 
58 47 46 
58 47 22-1 
58 48 0 
_sS 47 29I 
58 47 40,7 
58 47 57 
58 48 6 
58 47 44i 
58 48 0 
58 47 39 t 
58 47 38I 
58 47. 3 si 
58 47 33i 
58 47 2t4 
58 47 23 
58 47 38 
58 47 5°f 
.58 47 41 2 
58 47 49 
58 47 Hi 
58 47 38 . 
48 47 a6| 
58 47 32 
58 47 S^i 
The error of the line of collimation of the quadrant was 23^,6 for the go arch, and 19^,7 for the 96 
arch, to be fubtrafted from all zenith diftances, from the beginning of September, i 768, to the latter end of 
October ; from about which time, till towards the latter end of December, it appears to have been 2g",4' 
for the 90° arch, and 36", 7 for the 96 arch, to be added to all zenith diltances taken in that interval. About 
the latter end of December it altered again, but I had no opportunity of determining its quantity, and 
feemed to be pretty conflant all the month of January, 1769 ; but, about the beginning or middle of Fe- 
bruary, it began again to alter, and continued uncertain until the middle or latter end of June, when it 
became conftant again, and feemed to me to be, by the obfervations of )3 and y Draconis, 2 i",6 and 15", 5 
to be fubtraded from the 90 and 96 arches, refpedively. 
\V. \V. 
