A CONTINUOUS RECORD OF ATMOSPHERIC NUCLEATION. 



73 



As both series were made in the same way, the mean value S= 2.65 will be 

 inserted. With this value of 5 the data of the column Nn (i S/s 2 ) may be 

 computed throughout. Then in the region of normal coronas the fundamental 

 constant of the reduction follows as 



n = 



(i - S/5 2 ). 



With this constant, the true value of the nucleation (number of particles per 

 cub. cm.) is computed for all coronas as 



n = n Nn(i-S/s 2 ). 



All these data are found in table i. It should be noticed that the coefficient 

 370 is obtained from subsidence. 



FIGURE 4. CHART FOR TABLE i, SHOWING THE RELATION OF NUCLEATION (n) AND OF DIAMETER (rf) 

 OF FOG PARTICLE IN TERMS OF THE APERTURES (s) OF THE CORONAS. 



1 6. Remarks on the tables and graphs. The graphs, figure 4, for tables i and 

 3, show four independent series of observations of diameter, d, and nucleation, 

 n (particles per cub. cm.), in terms of the relative aperture, 5 = 60 sin<p, where 



