137 
of the variable Star in Sobieski’s Shield. 
attended to in the computation, and then the mean of the whole 
will be 35+ and 29— days: thus it appears that the time of 
the decrease is longer than that of the increase, and consequently 
that the places of the full and the least brightness are not 
situated at the distance of half the circumference from each 
other : the like circumstance will be found to be the case with 
most, if not all, of the variable stars. The next particulars 
to be reviewed are the durations of its brightness without any 
perceptible change, W'hile at its maximum and minimum. These 
determinations require a tolerable succession of observations ; 
where therefore that is not the case, they are omitted. 
Table VI. 
Duration of Bright 
ness at its Maximum. 
Duration of Brightness at its Minimum. 
1796 . 
Days. 
Magni- 
1 79 6 - 
Days. 
Magni- 
tudes. 
tudes. 
September 17 
9 
- 
5 
September 3 
7 
6 
November 13 
8 
- 
5 — 
October 22 
8 
6 
1 797 - 
17 97 - 
October 15 
3 2 
- 
6.5 
July 10 
24 
- 3-6 
1798. 
September 15 
18 : 
b-f- 
July 29 
6 
- 
5 + 
November 6 
6 
6 
October 25 - 
10 
- 
5 -b 
1798. 
December 5 
lb or 
more 
3-b 
July 10 
12 
6 
1799 - 
September 15 
9 
9 
June 1 
lb : : 
- 
6-5 
November 10 
8 
- 6+ 
August 7 - 
8 
- 
5 
1799 - 
October 11 - 
8 
- 
3 + 
July 4 
9 
7 
1801. 
September 16 
10 
6 
September 24 
15: : 
5 
November 5 
1801. 
lb : 
~ 6.j 
October 16 - 
9 
** b.5 
MDCCCV. 
T 
