tan 
Ill. Further Odbjervations upon Algol. By the fame. 
Read January 15, 1784. 
CT. 20th, Parircs faw Algol nearly at its greateft ob- 
{curation, at 3 o'clock in the morning. 
O&t. 22d, near 12 P. M. he obferved it again in the fame 
flate. | 
O&. 25th, at about 9 P. M. it appeared to him like a flar of 
the third magnitude. He was prevented by clouds from making 
long obfervations; but as all thofe he has had opportunities to 
make, indicate a period fomewhat longer than that of 2 days 
20h. 51’ he is inclined to think that half the difference 
between that period and his. own, viz. 2.d. 20h. 52’ will 
come very near the truth. eo 

