3 14 Captain Kater’s account of Sir Thomas Brisbane's 
May 1, by Sir Thomas Brisbane. 
Clock losing 0 8 ,3. Barometer 30,07 Inches. 
Temp, 
Time of coinci- 
dence. 
Arc of 
Vibra- 
tion, 
Mean 
Arc. 
Interval in 
Seconds. 
No. of 
Vibra- 
tions. 
Observed 
Vibrations 
in 24 hours. 
Correc- 
tions for 
Arc. 
Vibrations in 
24 hours. 
62,8 
63,6 
h. m. s. 
11 24 54 
33 54 
42 55 
51 56 
12 0 57,5 
10 1 
19 2 
28 3,5 
37 5,5 
46 9 
O 
1,32 
1,24 
1,18 
1,11 
1,04 
1,00 
0,94 
0,90 
0,84 
0,80 
1,28 
1,21 
1,14 
1,07 
1,02 
0,97 
0,92 
0,87 
0,82 
540 
541 
541 
541.5 
543.5 
541 
541.5 
542 
543.5 
2.69 
2,39 
2,31 
1,88 
1.70 
1,54 
1,38 
1,24 
1,10 
63,2 
Mean 
541,66 
539,66 
86080,67 
1, 80 
86082,47 
Vibrations of the Pendulum at London. 
Date. 
Barom. 
Therm. 
Vibrations in 
24 hours. 
Correc- 
tion for 
Temp. 
Vibrations in 
24 hours at 
60 degrees. 
April 25 
[nches 
29,62 
63,7 
86082,19 
+ 
1,57 
86083,76 
26 
29,70 
65,1 
86081,61 
2,16 
86083,77 
27 
29,70 
65,6 
86081,86 
2,37 
86084,23 
28 
29,82 
65,9 
86081,87 
2,50 
86084,37 
29 
29,84 
65,3 
86081,43 
2,24 
86083,67 
30 
30,20 
64,4 
86082,33 
1,86 
86084,19 
May 1 
30,07 
63,2 
86082,47 
1,35 
86083,82 
Mean 
29,85 
64,74 
86083,97 
The mean height of the barometer being 29,85 inches, and 
that of the thermometer 64°, 74 during the preceding experi- 
ments, we have 6,40 for the correction for the buoyancy of 
