362 Capt> Kater’s experiments for determining the variation 
Vibrations of the Pendulum at Portsoy, 2d Series. 
The clock making 86442,18 Vibrations in a mean solar day. 
Vibrations 
in 24 hours. 
Correction 
Vibrations 
Date. 
Barometer. 
Thermom. 
for 
Temp. 
in 24 hours 
at 62 degrees. 
Aug. 1 3 
A. M. 
- - 
, 
. . 
P. M. 
30,29 
61,9 
86081,04 
0,04 
8608 1,00 
A. M. 
30,25 
60,3 
86081,1 I 
0,72 
86080,39 
*4 
P. M. 
30,27 
62,4 
86080,19 
0,17 
86080,36 
>5 
A. M. 
3°> 2 5 
6o,I 
86080,85 
0,80 
86080,05 
P. M. 
30,25 
6l,6 
86080,1 3 
0,17 
86079,96 
A. M. 
30,18 
58,4 
86081,19 
1,52 
86079,67 
P. M. 
30,17 
60,9 
86080,26 
°,47 
86079,79 
l 7 
A. M. 
3 °>i 5 
59 > 8 
86080,60 
°>93 
86079,67 
P. M. 
30,16 
61,2 
86080,1 1 
°>34 
86079,77 
18 
A. M. 
30,14 
58,4 
86080,79 
1,52 
86079,27 
P. M. 
3 0,1 4 
60,2 
86080,18 
0,76 
86079,42 
A. M. 
30,10 
57>4 
86080.85 
1,95 
86078,90 
*9 
P. M. 
— 
— - 
— 
— 
Mean 
30,19 
60,2 
86079,85 
It appears from the above Table, as well as by the compa- 
risons of the clock with the chronometer, that the rate of the 
clock had been sufficiently uniform to render any correction 
on this head unnecessary ; in the following Table therefore 
we have the number of vibrations made by the pendulum in a 
mean solar day. 
