| 59 | seconds. |
| 04 | seconds. |
| 10.5 | seconds. |
| 17 | seconds. |
| |
| 77 - 59 = 18. |
| 18 ÷ 3 = 6.0 = time of one interval. |
Résumé.
| No. | 1 6.0 | seconds. | 6.31 × 5 = 31.55 |
| | 2 6.0 | seconds. | + 1.00 |
| | 3 6.7 | seconds. | ---- |
| | 4 6.3 | seconds. |
| | 5 6.5 | seconds. | 32.55 |
| | 6 6.7 | seconds. | 32.55 ÷ 6.31 = 5.159 |
| | 7 6.0 | seconds. | With fork free 5.163 |
| | ---- | | ----- |
| Mean = | 6.31 | seconds | Effect of scrape = - .044 |
Specimen.
Circumstances as in first case, except that both forks were on their resonators.
Coincidences were observed at—
| 21 | seconds. |
| 28 | seconds. |
| 36 | seconds. |
| 44 | seconds. |
| 51 | seconds. |
| 60 | seconds. |
| 60 - 21 = 39 |
| 39 ÷ 5 = 7.8 = | time of one interval. |
Résumé.
| No. | 1 | 7.8 | seconds. | 7.42 × 5 = | 37.10 |
| | 2 | 7.1 | seconds. | + | 1.00 |
| | 3 | 7.6 | seconds. | | ----- |
| | 4 | 7.4 | seconds. | | 38.10 |
| | 5 | 7.2 | seconds. | 38.10 ÷ 7.42 = | 5.133 |
| | | ---- | | (Above) | 5.159 |
| | | | | | ----- |
| | Mean = | 7.42 | seconds. Effect of support and scrape = | - .026 |
| |
| Mean of second determination was | 256.094 |
| Applying correction (scrape, etc.) | - .026 |
| | ------- |
| Corrected mean | 256.068 |
| Result of first determination | 256.072 |
| | ------- |
| Final value | 256.070 |
Note—The result of first determination excludes all work except the series commencing July 4. If previous work is included, and also the result first obtained by Professor Mayer, the result would be 256.089.