periodical Variation in Algol. 
At 8| h. rather brighter than (3 Trianguli, but the Iky 
not favourable. 
4 77 
was 
January 31. 
A-t iol- h. varied from its ufual brightnefs, but with fome- 
doubt. 
At ii| h. certainly lefs bright; much lefs than y Andro- 
medae, but brighter than f and e Perfei, and of between the 
fecond and third magnitude. 
At 1 2 1 h. third magnitude, and rather brighter than £ and <* 
Perfei. 
At 13 h. about the brightnefs of f Perfei, and much brighter 
tli an £ Perfei ; but the Iky was not favourable. 
At 1 41 h. about the fourth magnitude, and equal to £ Perfei, 
but afterwards increafed. 
February 6.- 
At 5 1- h. it was rather a little brighter than (3 Arietis, and 
between the third and fourth magnitude. 
At 65 h. about the third magnitude ; not fo bright as ( 3 - 
Arietis, but brighter than (3 Trianguli and e Perfei. 
At 6 1 h. about the fame brightnefs as (3 Trianguli and s Perfei. 
At h. between the third and fourth magnitude ; not quite 
fo bright as (3 Trianguli, nearly equal to 3 Perfei, and a little 
brighter than £ Perfei. 
At 7 1 h. about equal to £ Perfei, and nearly of the fourth 
magnitude ; but the fky was not favourable. 
At 8 h. rather a little lefs bright than p Perfei ; fky Pill un- 
favourable. 
At 8 1 h. between the third and fourth magnitude rather a 
little brighter than $ Perfei, and a little brighter than p Perfei. 
At 9 h. certainly brighter than $ Perfei, and of the third 
magnitude. 
At 
