36 CONDENSATION OF VAPOR AS INDUCED BY NUCLEI AND IONS. 



38. -34 -36 -38 -40 -4 -H -46 -^ -50 



FIG. 10. Condensational efficiency of large (i), intermediate (2), and small (3) fog 

 chambers, as appearing in the number n of vapor nuclei of dust-free wet air caught on 

 exhausting as far as Sp/p. 



