are enclosed in parentheses in the last column.
| 4685.98 | 0.01 | 22779.1 | (3 : 4) |
| 3203.30 | 0.05 | 22779.0 | (3 : 5) |
| 2733.34 | 0.05 | 22777.8 | (3 : 6) |
| 2511.31 | 0.05 | 22778.3 | (3 : 7) |
| 2385.47 | 0.05 | 22777.9 | (3 : 8) |
| 2306.20 | 0.10 | 22777.3 | (3 : 9) |
| 2252.88 | 0.10 | 22779.1 | (3 : 10) |
| 5410.5 | 1.0 | 22774 | (4 : 7) |
| 4541.3 | 0.25 | 22777 | (4 : 9) |
| 4200.3 | 0.5 | 22781 | (4 : 11) |
The values of the products are seen to be very nearly equal, while the deviations are of the same order of magnitude as the limits of experimental error. The value of the product
should for this spectrum, according to the formula (9), be exactly
of the corresponding product for the hydrogen spectrum. From the tables on pages [1] and [16] we find for these products
and
