278 Captain Hall’s details of experiments 
Observations of Coincidences at Rio de Janeiro. ( 2 nd Series. ) 
Clock losing41*,82 at a mean rate. Oct. 
23, A. M. 
Barom. 29,78. 
Time of co- 
Arc of 
Interval in 
No. of 
Observed 
Correc- 
Fahren- 
incidence. 
Vibra- 
Arc. 
Seconds of 
Vibra- 
Vibrations 
tion for 
heit. 
tion. 
Clock. 
tions. 
in 2 4 hours. 
Arc. 
O 
h. m. s. 
O 
73 
8 12 41 
x >35 
0 
24 46 
1,25 
1,30 
725 
2,76 
36 53 
x > x 5 
1,20 
727 
2 >35 
49 00 
1,05 
1,10 
727 
1,98 
918 
0,96 
1,005 
728 
1,64 
13 16 
0,89 
0,925 
728 
1,40 
25 25 
0,82 
0,855 
729 
1,19 
37 34 
0,75 
0,785 
729 
1,01 
74>3 
49 44 
0,71 
0,730 
73° 
0,87 
73 > 6 
7 2 7> 8 7 
7 2 5> 8 7 
86120,89 
1,65 
86122,54 
P. M. 
October 23. 
Barom. 29,71. 
76 
1 16 47 
x >34 
23 50 
1,23 
1,285 
723 
2,70 
40 53 
1,14 
1,185 
723 
2,29 
5 2 57 
1,05 
1,095 
724 
1,96 
2 5 3 
0,95 
1,000 
726 
1,63 
17 10 
0,88 
0,9 1 5 
727 
x >37 
29 16 
0,82 
0,850 
726 
1,18 
41 24 
0,76 
>79° 
728 
1,02 
76 
53 3 2 
0,70 
>73° 
728 
0,87 
76 
725,62 
723,62 
86120,15 
1,63 
86121,78 
A.M. 
October 24. 
Barom. 29,74. 
77 
8125 
I >3 1 
24 8 
1,20 
I > 2 55 
723 
• 
2 >57 
36 12 
1,10 
1,15 
724 
2,16 
78,1 
48 16 
1,02 
1,06 
724 
1,84 
9 O 22 
0,95 
0,985 
726 
1,58 
12 27 
0,87 
0,91 
725 
x >35 
2 4 34 
0,81 
0,84 
727 
x > x 5 
36 40 
0,75 
0,78 
726 
0,99 
79 
48 46 
0,70 
0,725 
726 
0,86 
78 
725,12 
7 2 3> 12 
86119,99 
1,56 
86121,55 
