810 



m 



80 



70 



60 



50 



40 - 



30 



20 



10 - 



8.5 



7.5 



PH 

 Fig. 3. 



6.5 



5.5 



It is t(t be lemeinbered, that the activity ///, as calculated according 

 to the radiation theory, is quite different from what had hitherto 

 been empirically' determined as activity. 



This is immediately clear from the formula 



nc I 



0,434 ^^1^ 



+ «y 



The observed effect // in a ^iven time / is evidently by no means 

 proportional to m. 



The above mentioned regularity in iii and the lesults, connected 

 with it, which will be recorded further on, therefore addnce con- 

 siderable experimental evidence for the radiation theory. 



