478 CAPTAIN SABINE ON THE LENGTH OF THE SECONDS PENDULUM 
Exp. D. In full atmospheric pressure. Aug. 22 a.m. Dent making 86465.92 vibrations. 
Barom. j endm"^ 29'760 } 29,788 at55 ° 5 5 +, ° 19 Capi11, 5 “ ,070 to 32 ° = 29 - 73 7. 
No. of 
Coincid. 
Tlierna. 
Gauge. 
Times of 
Arcs. 
Mean 
Temp. 
Mean 
Interval. 
Mean 
Gauge. 
Correc- 
tion for 
Arc. 
Vibrations 
in 24 hours. 
Disap. 
Reap. 
Coincidences. 
1 
26 
27 
28 
56.5 
56.9 
— 
m s 
03 41 
59 43 
06 44 
13 46 
m s 
03 53 
00 07 
07 10 
14 14 
h m s 
9 03 47 
j>12 06 57.33 
1.00 
0.23 
O 
} 56 ' 7 
422.71 
— 
O 
+ 0.67 
86057.48 
Pendulum removed. Planes examined. Pendulum replaced, Weight above. 
O 
m s 
m s 
h m s 
O 
O 
1 
.... 
.... 
33 50 34 00 
I 
2 
57.5 
.... 
40 4941 00 
> 12 40 54.5 
1.03 
1 
3 
47 48 48 00 
J 
26 
.... 
29 00 30 13 
1 
)■ 57-5 
421.78 
.... 
+ 0.99 
86056.88 
27 
35 56 
37 12 
1 
28 
57.5 
43 04 
44 20 
>> 3 43 40.7 
0.095 
J 
29 
.... 
50 02 
51 26 
1 
30 
57 04 
58 30 
J 
Exp. E. In full atmospheric pressure. Aug. 22 p.m. Dent making 86465.92 vibrations. 
Barom. j Jading " 8 09^50 } 29<705 at 57 °- 5 ’> + - 019 CapiU. ; .074 to 32° = 29.650. 
Exp. F. In rarified air. Aug. 23 a.m. to p.m. Dent making 86465.92 vibrations. 
1 
66 
58.3 
59.8 
0.94 
] .15 
18 4018 50 
08 30 09 01 
h m s 
9 18 45 
5 08 45.5 
O 
O 
1.24 
0.30 
f 59-05 
_j + 0.75 
433.85 
1.045 
+ 1.27 
86068.56 
L 59.80 
Exp. G. In full atmospheric pressure. Aug. 24 a.m. Dent making 86466.00 vibrations. 
Barom. j^! aains 29,299 | 29.280 at 60° ; +.019 Capill. 3 -.082 to 32° = 29.217. 
1 
26 
59.8 
59-4 
s ] m s 
42 
16 
4 32 4 
59 24 00 
8 4 37 
10 59 50 
O 
-v O 
I 
° 
1.19 
0.12 
1 59.6 
420.52 
— 
' + 1.06 
| • 
86055.82 
The ends of the bar of the pendulum were then blackened with lamp-black 
and varnish, to make a stronger contrast with the white disc on the clock pen- 
