•4G 



THE STRUCTUUE OF THE NUCLEUS. 



suggestion of the spontaneous ami [)roportionate increase of nuclei at low pressui-e 

 which has already been adiluced above. As a whole, the table shows that after 

 144 minutes about the 12th order of corona has appeared, admitting some uncer- 

 tainty due to the anomaly si)ecified. 



TAIJLE 20— LOSS OF NUCLEI DIE lO NORMAL CAUSES IN THE LAl'SE OF 



TIME. EXHAUSTION, 76-68 cm. 



time ; 



The following experiments were made in like manner for shorter lai)se8 of 

 TABLE 21.— LOSS OF NUCLEI DURING SHORTER 1 AI-I.S. 



if compared with the earlier data, figure 5, lie nearly on the intermediate line 

 (marked «) and linear variation may therefore be admitted here as above. The 

 value of the constant b computed from tables 20 and 21, where ;! == 3.5 rain., is 

 h ^= .092, and this is in sufficient agreement with the earlier data (b = .1) to admit 

 of the same value in the corrections. The corrected iiuml)er of nuclei is finally 

 computed under both isothermal and adiabatic conditions in tables 22 and 23. 



TABLE 22.— VALUES OF yA'i = 10 --(■ + '*')'°8j' 



J =/>/>» =-888 



6 := .10 



/= 3-5 min- 



