with an Equatorial Micrometer. 32 j 
m the Arfl table ; and in the evening I was lucky enough to 
get thofe of X Ceti and 0 Tauri, intending to repeat the whole 
the next morning and evening. The next morning proved 
cloudy, and fo continued, that I faw the planet no more ; but 
in the evening of the 26th, I found the liars come again fo 
near the fame declination, that I was encouraged to continue 
the obfervation to fee what change would happen. It then 
came on bad rainy weather till the 30th, when I again re- 
peated the obfervation, and found the liars to come fo near in 
declination that I was fully fatisfed of the liability of the 
inllrument, fo far at leall as could regard twenty-four hours : 
but as I was then appointed to go a journey, and could 
have no other ufe for it, I locked the door of the Ob- 
fervatory, leaving the ‘inllrument in its pofition, that I 
might fee what change would happen by the time of my return ; 
and was quite allonilhed to find, on the 13th of O&ober, that it 
had remained in a manner unmoved; for it had fuffered no 
more apparent alteration than what might occur by the errors 
of obferving, and alterations of the clocks and tranlit. 
It mull, however, be remarked, that, befides that in the 
conllru&ion of the inllrument every thing was contrived 
that appeared likely to give it firmnefs, it was relied upon 
th tfruftum of an hexagonal pyramid of Hone, in the founding 
whereof great care was taken as to its folidity, and was de- 
tached from the floor for fupporting the obferver. • - 1 
This Obfervatory at Aujihorpe I elleem in the latitude -of 
53° 4 - 7 7 5 N. and $' 50" of time W. from Greenwich. 
A a a 3 
Table 
