ip® Mr . Pxg’ott r s Obfervations on 
the others remain yet to be better authenticated. Though fome 
of them bear all the appearance of being variable, ftill no cer- 
tainty of their being fo has come to my knowledge. To thofe 
of the firft clafs are fubjoined obfervations made on them 
within thefe laft four years, from which the period and pro- 
greffive changes of fome are deduced, though never fettled 
before, and if already known are more exaftly determined by 
comparing my obfervations with former ones. Alfo, as the 
pofition of feveral are determined only by ancient aftronomers, 
and therefore inaccurately, I have obferved them with great 
exa&nefs, the declinations being taken with a Bird’s eighteen- 
inch quadrant, and the right afcenfions with a three-feet tranfit 
inftrument : thefe laft may ferve in future to difcover their 
proper motions in right afcenlion, for which reafon I fhall 
fpecify the ftars to which they were compared. The ftars of 
the fecond clafs have either their relative brightnefs exactly 
fettled, or their non-exiftence afcertained. I have alfo pointed 
out the probability of a miftake in feveral, and in general 
given an account of the appearance they have had within thefe 
few years* 
Catalogue 
