the Latitude and Longitude of York. 421 
The air was hazy both at Greenwich and at York. 
Laftly, an occultation of a ftar of the ninth magnitude, 
immerged behind the dark limb of the moon, during 
the eclipfe of Sept 10, 1783, at n h. 29' 6" apparent 
time. M. Messier alfo obferved it at 1 1 h. 5c/ 49"^ 
apparent time at Paris : he determined its R.A. 
349 0 22' 1 7", and declination 5 0 38' 23" fouth. M. 
Goodricke, who computes very accurately, finds it 
gives for difference of meridians, ... 4 44J 
I am rather furprifed, that the immerfions of known ftars 
of the fixth and feventh magnitude behind the dark limb of 
the moon are not conftantly obferved in fixed Obfervatories, as 
they would frequently be of great ufe. 
Latitude of York. 
The following determinations for the latitude of York were 
made with aBiRD’s 18-inch quadrant, the telefcope of two feet 
focus, with which inftrument obfervations of the fame ftar 
feldom differ io". 
Latitude of the Qbfervatory. 
® 
53 
57 
/./ 
37 bv 7 obfervations of Ar£lurus. 
53 
57 
41 by 2 
ditto 
of a Lyrse. 
53 
57 
52 by 1 
ditto 
of 0 Arietis, 
53 
57 
37 hy 1 
ditto 
of 0 Cygni. 
53 
57 
33 b y 2 
ditto 
of Algol. 
53 
57 
57 by 4 
ditto 
of y Lyrse. 
53 
57 
49 by 8 
ditto 
of @ Draconis. 
53 
57 
46 by 6 
ditto 
of (a Draconis. 
53 
57 
56 by 2 
ditto 
of y Draconis, 
S3 
On 
■>0 
1 
45 4 - latitude 
on a 
mean. 
1 i i a 
The 
