experiments made with an invariable pendulum, 
37 
Observation of Coincidences at Port Bowen (ist Series ) — continued. 
' “ — 1 ‘ 
Night, 20th June, 1825, Port Bowen. „ r ( Temp. 50°. R , (Beg®. 29.753 mer. 45 0 \ = 29.820 mean cor. 
Clock gaining 69^.88 at a mean rate. 7S ’ * Dew P '- 35 °- a * \ Ends. 29.750 - 48° j to temp, of pend. 
Temp. 
Time of 
Disappear- 
ance 
Time of 
Re-appear- 
ance. 
Mean of Dis- 
appearance 
and Re-ap- 
pearance. 
Arc of 
vibra- 
tion. 
Mean 
Arc. 
Interval in seconds 
Observed vibrations in 24 h. 
Correct, 
for Arc. 
Vibrat. in 24 h. cor. for Arc. 
Disap. 
Disap. & 
Re-ap. 
Disappearance. 
Mean ofDisap. 
and Re-ap, 
Disappearance. 
Mean ofDisap. 
and Re-ap. 
0 
49*5 
50.0 
5^5 
55 »° 
55>5 
57 * 8 
57 *° 
56.0 
56,0 
55,2 
h. m. s. 
9 48 5 ° 
10 00 26 
12 1 
2 3 35 
35 9 
46 41 
58 13 
11 9 45 
21 19 
32 53 
m. s. 
48 54 
00 32 
12 9 
23 43 
35 16 
46 50 
58 21 
9 54 
21 30 
33 4 
m. s. 
48 52 
00 29 
12 5 
23 39 
35 12,5 
46 45*5 
58 17 
9 49*5 
21 24,5 
32 58,5 
0 
1 • 1 5 
1.08 
1. 00 
o -93 
0.87 
0.81 
0.75 
0.70 
0.65 
0.61 
O 
I.II 5 
I.040 
0.965 
0.900 
0.840 
0.780 
0.725 
0.675 
0.630 
s. 
696 
695 
694 
694 
692 
692 
692 
694 
694 
s. 
697 
696 
694 
6 93*5 
6 93 
691.5 
692.5 
695 
694 
86221,403 
86221,046 
86220,687 
86220,687 
86219,967 
86219,967 
86219,967 
86220,687 
86220,687 
86221,760 
86221,403 
86220,687 
86220,508 
86220,328 
86219,78 6 
86220,148 
86221,046 
86220,687 
vib. 
2.032 
1.768 
I.522 
I.324 
I-I 54 
0,995 
0.859 
O.745 
0.649 
86223,435 
86222,814 
86222,209 
86222,01 1 
86221,121 
86220,962 
86220,826 
86221,432 
86221,336 
86223,792 
86223,171 
86222,209 
86221,832 
86221,482 
86220,781 
86221,007 
86221,791 
86221,336 
54^35 
4 > 3 S 
Mean. 
Diff. to 50°. Correction for Temp. 4°.35- 
Vibra. in 24 h. at Temp. 50°. 
86221,794 
4- 1,840 
86223,634 
86221,933 
+ 1*840 
86223,773 
Forenoon, 21st June, 1825, Port Bowen. ✓ 
Clock gaining at a mean rate 69 s .88. | 
Temp, 49°.5. R r (Begs. 29.700 mer. 47°.) = 29,766 mean cor. 
Dew P l . 36° har ' \ Ends . 29.709 — 47 0 . } to temp, of pend. 
49.8 
4^5 
49,0 
49 >S 
50.8 
50,8 
50,8 
50,6 
5°*5 
5°*3 
9 34 13 
45 53 
57 3 i 
10 9 1 1 
20 50 
32 28 
44 7 
55 47 
1 1 7 27 
19 7 
34 19 
45 58 
57 38 
9 l 7 
20 56 
32 35 
44 15 
55 5 6 
7 3 6 
19 1 6 
34 16 
45 55*5 
57 34*5 
9 H 
20 53 
3 2 3 D 5 
44 11 
IS 5 i >5 
7 31,5 
19 11,5 
1. 12 
1.04 
0.97 
0.91 
0.85 
0.79 
°73 
0.68 
0.64 
0.60 
I.080 
I.005 
0.940 
O.880 
0.820 
0.760 
O.705 
0.660 
0.620 
700 
698 
700 
699 
698 
699 
700 
700 
700 
699>5 
699 
699.5 
699 
698.5 
699*5 
700*5 
700 
700 
86222,823 
86222,1 16 
86222,823 
86222,470 
86222,1 16 
86222,470 
86222,823 
86222,823 
86222,823 
86222,647 
86222,470 
86222,647 
86222,470 
86222,293 
86222,647 
86223,000 
86222,823 
86222,823 
I . 9 °7 
I.650 
I.445 
I 266 
I.099 
O.944 
0.812 
0712 
O.628 
86224,730 
86223,766 
86224,268 
86223,736 
86223,2 15 
86223,414 
86223,635 
86223,535 
86223,451 
86224,554 
86224.120 
86224,092 
86223,736 
86223,392 
86223,691 
86223,81 2 
86223,535 
86223,45 l 
50,06 
0,06 
Mean. 
Diff to 50° Correction for Temp, o°.o 6. 
Vibra. in 24 h. at Temp. 50°. 
86223,750 
+ 0,025 
86223,775 
86223,820 
+ 0,025 
86223,845 
