II< 



A CONTINUOUS RECORD OF ATMOSPHERIC NUCLEATION 



TABLE 5.— NUCLEI DUE TO X-RAYS OR TO FILTERED P EMANATION; 

 FOR d AND n. tn = 4.j X 10''; \^'li = 2. 11 n'/tcm"^ 10'; /= 15-45" ; 

 ^/> = i7cm.; FILM, SOFT DAMAR VARNISH. 



DATA 



TABLE 6.— AIR NUCLEI; DATA FOR w. w = 4.7 X iQ-Vcm'; \/n--= 2. im' /tan"' 10' 

 < = 30^-15'; Sp = i-j cm. ; c= 5 X 26 X (.00304)°. 



19. Diameters and numbers. — The d-vaktes given by the photographs are 

 ahiiost without exception larger than the corresponding diameters compiated 



