(*.2 



TilK STUUOTtlKK ol" lirE NUCLEUS. 



TAHLE 4,-DlMKNSIONS OF SUCCESSIVE CORONAS, CLOUD PARTICLES, ETC. 

 I'UNK. NUCLEI. iVj = 83,000 PARTICI-ES. OTHER CONS PANTS AS IX TABLE 



DISCUSSION. 



10. N-umher and dhtrlhutions of cloud particles. — lu the case of the sulphur 

 nuclei there are originally 36,000 particles present per cubic centimeter and finall}- 

 hut 160 particles per cubic centimeter; this makes ou.O particles per linear centi- 

 meter initially, and 5.5 particles finally. 



For the case of punk nuclei there are 83,000 particles in each cubic centimeter 

 at first, and 90 particles per cubic centimeter at the end of thee.\))eriment. This is 

 <^<piivalent to 43.6 particles per linear centimeter initially and l)ut 4.5 particles 

 finally. In buth instances they are thus about 2 millimeters apart when the coronal 

 display virtually ceases. 



The reason for the different numbers at the outset can hardly be succinctly 

 stated. It seems reasonable that differences in the initial numbers of nuclei should 



