ATMOSPHERIC IONS. 



T 53 



Table 52. Mean daily ionizations corresponding to table 51. Continued. 



96. Mean monthly ionizations and conclusion. The straightforward 

 way of arriving at a conclusion as to the presence or absence of a relation 

 between the nucleation and the ionization of the atmosphere consists 

 in comparing the average monthly values for both cases. This is done 

 in table 53, and graphically in fig. 62. 



The curve showing the distribution of negative ions is probably the 

 more trustworthy, as these observations were made last. The positive 

 distribution curve is too high in December and January for the reasons 

 already stated, and its more probable course during these two months is 

 indicated by the dotted line. It seems exceedingly curious that whereas 



