the length of the pendulum at Madras. 
151 
April 1S.P.M. Barometer 
Rate of Clock o"88 \ — f. 1 
Hygrometer 1 6°5 dry. j Mean - 29,97s 
Temp. 
Time of coin- 
cidence. 
Arc 
of vibra- 
tion. 
Mean 
Arc. 
Interval 
in 
seconds. 
Number 
of vibra- 
tions. 
Observed 
vibrations 
in 24 hours. 
Correc- 
tion for 
Arc. 
For 
Tempe- 
rature. 
Vibrations 
in 24 hours. 
h. m. s. 
O 
O 
n 
+ 
+ 
87 5 S 
z 21 17,62 
1*275 
I.223 
7 ° 7 * 5 ° 
705*50 
86155,76 
2*451 
7*386 
86165,597 
33 5 * 12 
1,170 
1,112 
708,50 
706,50 
86156,01 
2,026 
7>356 
86165,392 
87>35 
44 53 * 62 
1*055 
1*015 
710,88 
708,88 
86157,06 
1,688 
7 * 3 j8 
86166,066 
5 6 44 * 5 
0,975 
o *933 
709,62 
707*62 
861 36,49 
1,426 
7,276 
86165,192 
8 7 *I 5 
00 
04 
0,890 
86165,562 
87*33 
Mean 
Rate of the Clock 
-f ,880 
86166,442 
Barometer 
f29,96l 
. ! 
(29952 
Mean 
29*956 
h. m. s. 
O 
O 
/✓ 
+ 
+ 
87,1 
3 l 7 °* 12 
I, 26 
1, 20 
708,50 
706*50 
86156,01 
2*359 
7*212 
86165,461 
28 48,62 
I, 14 
1*093 
707*88 
■v| 
O 
On 
OO 
00 
86155,89 
1*958 
7*170 
86165,018 
86,9 
4 ° 3 6 * 5 
1,045 
1*013 
710,62 
708,62 
861 36,83 
1,681 
7 * 1 36 
86165,647 
52 27,12 
0, 98 
°>935 
710,50 
708,50 
86156,79 
i *432 
7*"5 
86165,337 
86,8 
4 4 ‘ 7*62 
O, 89 
86165,366 
86,93 
Mean 
Rate of the Clock 
+ ,880 
86166,246 
