made with an invariable pendulum, 
285 
Clock losing 41*,82 at a mean rate. Nov. 2 , P. M. 
Barom. 29 , 69 . 
Temp. 
Fahren- 
heit. 
Time of co- 
incidence. 
Arc of 
Vibra- 
tion. 
Mean 
Arc. 
Interval in 
Seconds ol 
Clock. 
No. of 
Vibra- 
tions. 
Observed 
Vibrations 
in 24 hours. 
Correc- 
tion tor 
Arc. 
Vibrations in 
24 hours. 
O 
78,5 
79 * 
79*9 
h. m. s. 
11 2 55 
H 55 
26 57 
39 1 
5 1 5 
12 3 10 
15 J 5 
27 20 
39 2 5 
1*39 
1,28 
I,l8 
1,09 
1,00 
0,92 
*85 
*78 
*72 
i *3 35 
1,230 
M 35 
1,045 
0,960 
,885 
,815 
* 75 ° 
720 
722 
724 
724 
725 
7 2 5 
725 
725 
2,91 
2,47 
2,10 
1,78 
M 1 
1.28 
1,08 
0,92 
79 * 1 
723*75 
72 i ,?5 
86119,54 
1,76 
86121,30 
TABLE V. ( 2 nd Series .) 
Vibrations of the Pendulum at Rio de Janeiro, 
the Clock making 86358,18 Vibrations in a mean Solar Day. 
Date. 
Barome- 
ter. 
Thermo- 
meter. 
Differenc 
of Tem- 
perature 
and 68<* 
Vibrations of 
Pendulum in 
24 hours, cor- 
rected for Arc 
Correction 
for Temper 
ature. 
Vibrations in 
24 hours at 
Temperature 
68 degrees. 
October 
Inches. 
23 A. M. 
29,78 
73 6 
5*6 
86122,54 
+ 
2*37 
86124,91 
P. M. 
29,71 
76 0 
8,0 
86121,78 
+ 
3*38 
86125,16 
24 A. M. 
29*74 
78 0 
10,0 
86121,55 
+ 
4*23 
86125,78 
P. M. 
29*73 
78,2 
10,2 
86121,13 
+ 
4 * 3 i 
86125,44 
25 A. M. 
29,88 
76,4 
8,4 
86121,63 
+ 
3*55 
86125,18 
P. M. 
29,88 
76.5 
8,5 
86121,48 
+ 
3*59 
86125,07 
26 A. M. 
29,90 
7^2 
8,2 
86 l2I,86 
+ 
3*47 
86125,33 
P. M. 
29,89 
76,3 
8*3 
86121,73 
+ 
3*5i 
86125,24 
27 A. M. 
29,90 
74*2 
6,2 
86122,82 
+ 
2,62 
86125,44 
P. M. 
29,82 
74*9 
6,9 
861 22,41 
4 " 
2,92 
86 1 25*33 
28 A.M. 
29*79 
75*i 
7*i 
86122,50 
+ 
3*00 
86125,50 
P. M. 
29,76 
75*7 
7*7 
86122,42 
+ 
3*26 
86125,68 
29 A. M. 
29*77 
75*o 
7*o 
86122,78 
+ 
2,96 
86125,74 
P. M. 
29*77 
75*5 
7*5 
86l 22,67 
+ 
3*i7 
86125,84 
30 A. M. 
29,82 
75*9 
7*9 
86122,62 
+ 
3*34 
86125,96 
P. M. 
29,82 
7 6 * 2 
8,2 
86122,39 
+ 
3*47 
86125,8 6 
31 A.M. 
29,89 
76,1 
8,1 
86122,46 
+ 
3*43 
86125,89 
P. M. 
29,87 
7 6 *5 
8*5 
86122,47 
+ 
3*59 
861 26,06 
Nov. 1 A. M. 
29,82 
76,1 
8,1 
86122,3 6 
+ 
3*43 
86125,79 
P.M. 
29*74 
77*i 
9*i 
86121,80 
+ 
3*85 
86125,65 
A. M. 
29,71 
78,5 
10,5 
86121,55 
+ 
4*44 
86125,99 
P. M. 
29,69 
79* 1 
11, 1 
86121,30 
+ 
469 
86125,99 
Mean 
29,80 
76,2 
Mean 
86125,53 
