A CONTINUOUS RECORD OF ATMOSPHERIC NUCLEATION. 



79 



Direct measurements of the a, by comparison with lycopodium gave 5; = . 7 8 

 and .84 for the near and far faces of the chamber whence a, = .0026 (diffraction) 

 and n = $-s.$s\ This is in the usual way smaller, and n/s* larger than the 

 subsidence datum (^ = .00223), but the latter will be taken here as above. 

 Both values are compared in the tables, the ratio being .64 = '/". 



22. Apertures of the discs of the coronas. Table 10 contains two inde- 

 pendent series of results arranged as in the preceding tables. The source of 

 light is the Welsbach mantel. The data are further shown in figure 7. 



FIGURE 5. CHART SHOWING THE RELATION OF RELATIVE NUCLEATION (r) TO THE NUMBER (z) OR 

 ' ORDER OF THE EXHAUSTION FOR TABLE 3. 



FIGURE 7. CHART SHOWING THE RELATION OF THE ACTUAL NUCLEATION (n) TO THE NUMBER (z), OR 

 ORDER OF THE EXHAUSTION, FOR TABLE 10. ALSO THE DIAMETER d (IN io~ s CM.) OF THE FOG PARTICLES 

 IN TERMS OF z. 



FIGURE 8. Do. FOR 



