in the length of the pendulum vibrating seconds. 363 
By the Stars. 
2d Series. Portsoy. 
From 
To 
Correct Vibrations 
in a 
mean solar day. 
So. of stars 
observed. 
Inter, of 
Transits. 
14 A. M. 
14 P. M. 
86079,86 
I 
I 
14 A. M. 
IS P. M. 
86079,73 
2 
2 
14 A.M. 
16 P. M. 
86079,78 
2 
3 
14 A. M. 
17 P. M. 
86079,81 
I 
4 
14 A. M. 
18 P. M. 
86079,76 
I 
5 
15 A. M. 
15 P. M. 
86079,63 
4 
1 
15 A. M. 
16 P. M. 
86079,71 
3 
2 
15 A. M. 
17 P. M. 
86079,78 
6 
3 
15 A. M. 
18 P. M. 
86079,77 
3 
4 
16 A. M. 
16 P. M. 
86079,80 
4 
1 
16 A. M. 
17 P. M. 
86079,87 
4 
2 
16 A. M. 
18 P. M. 
86079,83 
4 
3 
17 A. M. 
17 P. M. 
86080,03 
3 
1 
17 A. M. 
18 P. M. 
86079,79 
3 
2 
18 A. M. 
18 P M. 
86079,69 
3 
1 
By the Sun. 
2d. Series. 
13 P. M. 
15 A. M. 
86079,89 
2 
2 
13 P. M. 
16 A. M. 
86079,8 6 
2 
3 
13 P.M. 
17 A. M. 
86079,84 
2 
4 , 
13 P. M. 
19 A. M. 
86079,85 
2 
6 
15 P. M. 
16 A.M. 
86079,78 
2 
1 
15 P. M. 
17 A. M. 
86079,79 
2 
2 
15 P. M. 
19 A. M. 
86079,83 
2 
4 
16 P. M. 
1 7 A M. 
86 79,81 
2 
1 
16 P. M. 
19 A. M. 
86079,84 
2 
3 
1 7 P. M. 
19 A. M. 
86079,86 
2 
2 
Employing the numbers of stars observed, and the intervals 
of the transits, as before, we obtain 86079,78 vibrations by the 
observations of the stars, and 86079,84 by those of the sun ; 
and the sums of the factors being 96 and 56, we have 86079,80 
for the final mean number of vibrations in 24 hours. 
The mean height of the barometer was 30,19 inches, and 
that of the thermometer 6 o°,2, hence the correction for the 
buoyancy of the atmosphere is 6,07. 
