go A CONTINUOUS RECORD OF ATMOSPHERIC NUCLEATION. 



manifest the same relations already instanced above. The small value n = 

 70,000 which belongs to the green corona, and the correspondingly small values 

 for the other coronas, are in accord with the small pressure difference, dp = 8. 5, 

 chosen ; but it will presently appear that this value is even smaller than would 

 be predicted. The crests of the n-cycles may be located at = 25,000, 65,000, 

 and 550,000, from which the corresponding d-values would be <iXio 6 =585, 

 430, 210 cm., indicating diameters of fog particles in the ratio of 3:2:1. 



100 



/>- 16 



FIGURE n. CHARTS FOR TABLE 15, SHOWING THE NUCLEATIONS (n) AND DIAMETERS (d) OF THE FOG 

 PARTICLES, IN TERMS OF THE APERTURES (s) OF THE CORONAS. 



FIGURES 12, 13. CHARTS FOR TABLE 18, SHOWING THE RELATION OF THE APERTURES, 5, OK THE 

 CORONAS TO THE NUMBER, z, OF EXHAUSTIONS. 



The (i-values are much more difficult to correlate, although the main cycles 

 are apparent. The appearance here is that of four independent loci which 

 appear united as the result of color distortion. The view which ascribes to 

 these curves different parameters is in many respects plausible. There are 

 three green coronas discernible corresponding to io 6 Xd = 275, 443, 617, about 

 in the ratio of 3 15 :j. But this result is again merely tentative. 



Table 15 contains two series of results in which larger times intervene 

 between the exhaustions to insure more thorough diffusion and less distortion 

 of color. The data are mapped out in the same chart, figure n, one above the 

 other. In the w-curves four cycles may be made out, the lower less distinctly, 



