DISTRIBUTIONS OF NUCLEI. 



67 



Table 21. Colloidal nuclei in air. New apparatus. Glass fog chamber. Piping 

 12 inches long, 4 inches in diameter; 4-inch plug stopcock. 



I. 

 Mar. 16 

 Later . . 



II. 

 Mar. 17 



Later . . 



III. 

 Mar. 18 



IV. 



Mar. 19 



Incom- 

 ing se- 

 ries. 



Cor. 



w y' 

 w y 

 w y 

 wB P 

 wy' 

 w o 

 w y 



gyo 



cor 

 w o 



gyo 



w p cor 



w o 



cor 

 y'obg 



Stone- 

 blue 

 w y 



gyo 



gBP 



b'B 



gBP 



gyo 



togB 

 gBP 

 w o g 



cor 



cor 



cor 



cor 



cor 



cor 



cor 



cor 



nx io -3 . 



20 



3 



20 



2 i6 



27 



12 



25 



5i 



20 



28 



140 



315 



315 



165 



330 



350 



350 



425 



30 



315 



425 

 190 



315 



4i 



390 



540 

 510 

 500 



4 425 



460 

 300 

 40 

 18 

 14 

 13 

 12 

 10 



7 

 2 



n X 10 



3 



Promiscuous results. 



V. 

 Mar. 20 

 Later . . 



VII. 

 Mar. 22 



Later . . 



X. 



X-rays; 



D=20 



cm. 



3 

 16 



9 

 19 

 120 

 270 

 390 

 470 



450 

 370 

 450 

 390 

 250 

 165 



120 



33 

 62 



330 

 475 

 475 

 420 



470 



455 

 430 

 400 



39 



39 



210 



340 

 40 



310 

 16 



1 s= 3.8 persistently except on first exhaustion. 



2 Many periods follow. 



3 Blurred; other coronas very clear, often multi- 



annular. 



4 Periods usually omitted. 

 6 Fog chamber greasy. 



6 Followed in next exhaustion by small corona. 



7 Apparatus cleaned again. 



