( 320 ) 
Series 5. log p = 3.98960 + 0.17902 T. 
Wat Tia Tease a oe fee PE ‘ oe cae | 3 
I log p (cale.)| log p (obs.) e p (cale.) |p (obs.) 
| | | 
1.9 4.32974 4.33025 | + 0.02051 21367 | 22400 
2.2 4.38344 4.39270 | + 0.009 | 24179 94700 
2.6 445505 | 4 49051 | — 0.09854 98513 26700 
2.9 | 4.50876 | 4.50243 | — 0.00633 | 32267 | 31800 
3.2 4.56246 4.56820 | + 0.00574 | 36514 37000 
3.6 4.63407 4.61490 | — 0.0197 | 43060 | 44200 
3.7 | 4.65197 | 4.63049 | — 0.01048 | 44871 | 43600 
4.2 | 4.7448 | 4.77989 | + 0.03084 | 55141 | 59200 
——— 
om = ve = (0)? = 0.02024 
mean error of one observation 4.77 °/,. 
Series 6. log p= 4.31949 + 0.22466 J. 
| —— 
I log p (cale.)| log p (obs.) | ¢ | p (eale.) | p {obs.) 
| = | | 
2.1 4.79198 | 4.78746 | — 0.00382 6184 61300 
2.4 | 4.85867 | 4.85673 | — 0.00194 | zoop 719.0 
2.9 4.97100 | 4.96190 | — 0.00910 93540 91600 
3.6 5.19897 | 5.41394 | — 0.01433 | 434360 | 430000 
4.2 | 5.26306 5.29296 | + 0.02990 | 183957 | 196000 
i 
et 8 ve > (0)? = 0.01702 
mean error of one observation 4.00 °/,. 
The empirical formula represents fairly well the observed results 
in the range of the experiment. But it does not give more than that, 
I do not think that it may be used for extrapolating. This will be 
directly seen, when we extrapolate for the intensity = 0. We cal- 
culate for the frequency at the intensity = O in the 4" series: 6324 d. v. 
and in the 3'4 series: 7009 d.v. Theoretically the frequency in series 
4 should be exactly 2 times higher than in series 3. 
