length of the pendulum vibrating seconds. 67 
By the foregoing measurements, the distance between the 
knife edges appears to be 39,4 inches +954,49 divisions. 
The pendulum was now placed on its support, and the fol- 
lowing experiments made for equalising the number of 
vibrations. 
Slider 18 divisions. 
Clock losing o",33 
on mean time. 
Great weight above. 
Barometer 
29,7. 
Temp. 
Time of co- 
incidence. 
Arc of 
vibration 
Mean 
arc. 
Interv. in 
seconds. 
No. of 
vibrats. 
Vibrations 
in 24 hour,. 
Corr. 
for arc. 
Vibrations in 
24 hours. 
66,8 
66,8 
m. s. 
Z9.12 
37 - 5 ° 
46.30 
1,29 
1,07 
0,93 
1,18 
1,00 
5*8 
520 
516 
5*8 
86066,40 
86067,70 
S 
2,28 
1.63 
Mean 
Clock 
86068,68 
86069,33 
86069,00 
— °>33 
66,8 
mean 
86068,67 
Great weight below. 
66,6 
66,7 
5>59 
14,32 
23.4 
1,25 
I » I 3 
1,01 
1,19 
1,06 
5*3 
512 
5 > 1 
510 
86063,16 
86062,50 
2,32 
1,84 
Mean 
Clock 
Temp. 
86065,48 
86064,34 
86064,91 
— °>33 
— 0,04 
66,7 
mean 
86064,54 
June 
19th. 
Here the vibrations were in excess ; the slider was there- 
fore placed at 29 divisions, and the second weight moved 
nearer to its knife edge. 
