31*2 
MR. AIRY’S ACCOUNT OF THE HARTON EXPERIMENT 
No. of 
Swing. 
Approximate 
Time 
(Astronomical 
Reckoning). 
Number of 
Signals. 
Oct. 
h 
8. 
23 
49 
/ 
9. 
3 
43 
^0 * * • 
29--- 
QA... 
9. 
9. 
7 
11 
28 
24 
9- 
15 
25 
3^3... 
9. 
19 
27 
9. 
23 
24 
00 
10. 
3 
23 
• 
10. 
7 
24 
3g... 
10. 
11 
39 
10. 
15 
32 
0/ • • • 
10. 
19 
39 
10. 
23 
38 
39” 
40.. . 
41 .. . 
11. 
11. 
3 
7 
26 
26 
45... 
11. 
11 
22 
43... 
11. 
15 
24 
44... 
11. 
19 
22 
45 •* 
11. 
23 
46 
46--- 
12. 
3 
35 
4^7 .. . 
12. 
7 
30 
'I/ ••• 
4ft • 
12. 
11 
28 
40 •• 
12. 
15 
29 
50... 
12. 
19 
27 
51- 
12. 
13. 
23 
3 
27 
25 
13. 
7 
29 
15. 
23 
104 
0 »3 * * * 
16. 
3 
25 
04 • * • 
16. 
7 
26 
o5*** 
■"16. 
11 
og 
5.7 . . . 
ri6. 
15 
28 
0 / 
58--- 
16. 
16. 
19 
23 
25 
25 
60*** 
17. 
3 
23 
61 ••• 
17. 
7 
29 
17. 
1 1 
.31 
6-3... 
17. 
15 
29 
64... 
17. 
19 
34 
65 • 
17. 
23 
29 
66-.. 
18. 
3 
30 
67-.- 
18. 
7 
27 
18. 
1 1 
45 
f^ft . . . 
18. 
19 
55 
ICiO... 
18. 
23 
28 
!*rn . . . 
19. 
3 
25 
1 / u 
I7 1 . . . 
19. 
7 
31 
'/I 
,70. . . 
19. 
1 1 
56 
T'i... 
19. 
1 0 
27 
/ •> 
74 ■ . 
19. 
19 
28 
19. 
23 
27 
/.->■■■ 
20. 
3 
28 
77 ... 
20. 
7 
24 
J 4 
20. 
1 1 
30 
20. 
1 0 
31 
/ O**' 
W A . . . 
20. 
19 
30 
ft 1 ... 
20. 
23 
30 
82--. 
21. 
3 
28 
21. 
4 
06 
Table (continued). 
Mean 
of Times 
Mean 
of Times 
by Shelton. 
by Ea 
RNSHAW. 
h 
in 
s 
h 
m 
S 
3 
14 
11-153 
21 
37 
30-535 
7 
5 
28-335 
1 
29 
8-074 
11 
3 
59-086 
5 
28 
0-068 
15 
10 
13-763 
9 
34 
36-246 
19 
10 
55-648 
13 
35 
39-344 
23 
3 
9-796 
17 
28 
14-011 
3 
21 
34-825 
21 
47 
1-900 
7 
21 
9-339 
1 
46 
57-395 
11 
4 
11-154 
5 
30 
18-967 
15 
5 
44-566 
9 
32 
13-120 
19 
4 
23-337 
13 
31 
12-775 
23 
4 
19-227 
17 
31 
29-687 
3 
19 
38-884 
21 
47 
11-955 
7 
4 
23-004 
1 
32 
15-723 
11 
4 
15-577 
5 
32 
29-061 
15 
22 
8-855 
9 
50 
45-077 
19 
9 
3'871 
13 
37 
59-867 
23 
4 
17-750 
17 
33 
34-191 
3 
19 
34-541 
21 
49 
13-263 
7 
4 
54-177 
1 
34 
52-317 
11 
3 
51-880 
5 
34 
10-673 
15 
14 
4-168 
9 
44 
44-254 
19 
7 
12-252 
13 
38 
12-479 
23 
4 
58-141 
17 
36 
18-748 
3 
27 
18-618 
21 
59 
1-711 
7 
4 
2-968 
1 
36 
4-528 
11 
2 
53-297 
5 
35 
15-189 
2 
51 
48-661 
22 
3 
1-492 
6 
24 
31-280 
1 
35 
55-852 
10 
24 
35-061 
5 
36 
12-788 
14 
26 
49-607 
9 
38 
41-534'" 
18 
44 
44-739 
13 
56 
50-736 
22 
23 
5-716 
17 
35 
23-696 
2 
25 
8-388 
21 
37 
39-488 
6 
24 
5-987 
1 
36 
50-126 
10 
25 
1-100 
5 
37 
58-355 
14 
26 
49-803 
9 
40 
0-171 
18 
26 
20-928 
13 
39 
44-404 
22 
27 
15-182 
17 
40 
51-521 
2 
45 
4-417 
21 
58 
53-931 
6 
27 
17-680 
1 
41 
19-037 
10 
26 
6-444 
5 
40 
20-118 
14 
29 
14-087 
9 
43 
40-451 
21 
34 
41-845 
17 
32 
42-435 
1 
36 
40 043 
21 
34 
58-875 
5 
37 
1 8-936 
1 
35 
56-268"’ 
9 
37 
36-387 
5 
36 
31-803 
13 
41 
57-245 
9 
41 
11-578 
17 
36 
14-544 
13 
35 
46-770’" 
21 
37 
46-375 
17 
37 
36-82l‘" 
1 
49 
22-985 
21 
49 
31-91 1 
5 
38 
17-214 
1 
38 
43-214 
9 
35 
52-683 
5 
36 
36-362"' 
13 
51 
13-747 
9 
52 
16-680'” 
17 
38 
14-806 
13 
39 
34-400 
21 
37 
3-387 
17 
38 
40-577 
1 
42 
59-657 
21 
44 
54-297 
5 
35 
31-132 
1 
37 
42-732 " 
9 
46 
46-654 
5 
49 
16-422'" ■ 
by 
••4 
••4 
••4 
••4 
••3 
••4 
•4 
•3 
••3 
••4 
•■3 
••3 
••4 
••3 
••4 
Interval 
Shelton. 
by 
m 
S 
h 
51 
17-182 
3 
58 
30-751 
3 
6 
14-677 
4 
0 
41-885 
4 
52 
14-148 
3 
18 
25-029 
4 
59 
34-514 
3 
43 
1-815 
3 
1 
33-412 
4 
58 
38-771 
3 
59 
55-890 
4 
15 
19-657 
4 
44 
44-120 
3 
59 
52-573 
4 
17 
53-278 
4 
46 
55-016 
3 
55 
13-879 
3 
15 
16-791 
4 
45 
19-636 
3 
58 
57-703 
3 
10 
12-288 
4 
53 
8-084 
3 
57 
45-889 
3 
22 
20-477 
4 
36 
44-350 
3 
58 
50-329 
3 
32 
42-619 
3 
0 
3-781 
4 
2 
14-546 
4 
17 
55-132 
4 
38 
20-977 
3 
2 
2-672 
4 
58 
57-599 
3 
0 
55-113 
4 
1 
48-703 
4 
59 
31-125 
3 
0 
54-254 
4 
17 
49-235 
4 
42 
13-263 
3 
58 
48-764 
3 
3 
7-643 
4 
1 
58-198 
4 
0 
38-893 
4 
0 
17-451 
4 
4 
20-858 
4 
54 
17-299 
3 
1 
31-831 
4 
11 
36-610 
4 
48 
54-229 
3 
57 
35-469 
3 
15 
21-064 
4 
47 
1-059 
3 
58 
48-581 
3 
5 
56-270 
4 
52 
31-475 
3 
11 
15-522 
4 
Rate 
Earnshaw 
Shelton 
Loganthm of 
„ Earnshaw 
Rate „ 
Shelton 
Interval 
Earnshaw. 
ra 
s 
51 
37-5.39 
58 
51-994 
6 
36-178 
1 
3-098 
52 
34-667 
18 
47-889 
59 
55-495 
43 
21-572 
1 
54-153 
58 
59-655 
0 
16-912 
15 
42-268 
45 
3-768 
0 
13-338 
18 
16-016 
47 
14-790 
55 
34-324 
15 
39-072 
45 
39-054 
59 
18-356 
10 
33-581 
53 
28-225 
58 
6-269 
22 
42-963 
37 
2-8I7 
59 
10-661 
32 
54-360 
0 
16-936 
2 
28-746 
18 
9-202 
38 
32-960 
2 
15-792 
59 
10-638 
1 
8-229 
2 
1-816 
59 
44-233 
1 
7-117 
18 
2-410 
42 
25-106 
59 
1-081 
3 
20-333 
2 
16-440 
0 
57-393 
0 
35-535 
4 
39-775 
54 
35-192 
1 
50-051 
11 
55-090 
49 
11-303 
57 
53-148 
15 
40-318 
47 
17-720 
59 
6-177 
6 
13-720 
52 
48-435 
11 
33-690 
1-0014670 
1-0014844 
1-0014553 
1-0014690 
1-0014726 
1-0014744 
1-0014596 
1-0014765 
1-0014311 
1-0014586 
1-0014603 
1-0014760 
1-0014572 
1-0014427 
10014696 
1-0014524 
1-0014486 
1-0014547 
1-0014363 
1-0014405 
1-0014184 
1-0014399 
1-0014286 
1-0014286 
1-0014201 
1-0014188 
1-0009200 
1-0009134 
1-0009770 
1-0009092 
1-0009148 
1-0009034 
1-0009095 
1-0009074 
1-0009039 
1-0009121 
1-0008899 
1-0008518 
1-0008884 
1-0008597 
I-OOO8699 
1-0012565 
1-0012814 
1-0012544 
1-0012903 
1-0012729 
1-0012573 
1-0012241 
1-0012432 
1-0012402 
1-0012567 
1-0012232 
1-0012281 
1-0011826 
1-0012158 
1-0012051 
0-00063664 
0-00064419 
0-00063157 
0-00063751 
0-00063907 
0-00063985 
0-00063344 
0 00064076 
0-00062107 
0-00063300 
0-00063374 
0-00064054 
0-00063240 
0-00062610 
0-00063777 
0 00063031 
0-00062866 
0-00063131 
0-00062333 
0-00062515 
0-00061556 
0-00062489 
0-00061999 
0-00061999 
0-00061630 
0-00061574 
000039937 
0-00039650 
0-00042410 
0-00039469 
0-00039712 
0-00039216 
0-00039482 
0-00039390 
0-00039238 
0-00039594 
0-00038631 
0-00036977 
0-00038565 
0-00037320 
0-00037763 
0-00054535 
0-00055614 
0-00054444 
0-00056001 
0-00055246 
0-00054570 
0-00053129 
0-00053958 
0-00053828 
0-00054543 
0-00053091 
0-00053302 
0-00051330 
0-00052770 
0-00052305 
Corrected 
Logarithm of 
„ . Earnshaw 
Rate —7; 
Shelton 
0-00063697 
0-00063715 
0-00063397 
0-00063514 
0-00063027 
0-00062861 
0-00062576 
0-00062269 
0-00041120 
0-00039486 
0-00038698 
0-00038267 
0-00037493 
0-00055075 
0-00054711 
0-00053879 
0-00053523 
0-00052620 
0-00051615 
