8o 



A CONTINUOUS RECORD OF ATMOSPHERIC NUCLEATION. 



TABLE lo.— CONSTANTS OF CORONAS. CHAMBER AND DISTANCES AS ABOVE. 

 6^ = 21°; BAROM., 75.3 cm.: Sp=i6.g cm.; y=.TT, a: = .o62; P = o; 5=1.3; a' = 

 .0026; n" = . 00223; w = 4. 7X10-6 grams; »^=2ooooo; s MEASURED TO INNER 

 EDGE OF FIRST RING (APERTURE OF DISC); PHOSPHORUS NUCLEI; 

 WELSBACH LAMP. 



Second Series. — a'=.o6i; ii<,= 175000. 



The subsidence constant must be smaller in this case, since S~j^, = sl 

 {\ — slj^,/ysi), and it is clear that S and 5' must change in the same ratio 

 nearly. It was shown that 5, = .7750, or 5;' = .5950, and hence 5j = 2.6X.59 

 = 1.56. An actual computation gave Si =1.3, the difference being easily 

 referable to incidental discrepancies. 



23. Remarks on the table and graphs. — The green corona now shows the 

 nucleations (110,000 +82, ooo)/2 and independently 96,000, in the two series, 

 agreeing reasonably well with the above 85,000, 106,000, 104,000, 96,000, the 



