14 



THE STRUCTURE OF THE NUCLEUS. 



(•(mdeiiser in arbitrary units, when tlie potential difference, E^, is about 40 volts 

 and tile initial deflection, -Sp, as stated. In both cases the insulation of the 

 condenser in the absence of the air curi-eut is measured for each temperature. 

 This is then deducted and the corrected electrical currents tabulated in the fourth 

 column. In table 6 a channeled haril rubber bushing guards (unnecessarily, lis 

 it afterwards [)roved) against metallic contact of the core and envelope. In table 

 7 this has been removed. The phosphorus in both tables is dried preliminarily as 

 stated, by a curient of diy air from the desiccator, entering the condenser first and 

 passing thence over the phosphorus grid into the atmosphere. The last columns 

 give the currents, (ds/Jt)^/.^^ —i^/Q^, supposing that initially (/ — Q af~''^'~'°\ 

 as stated in § 11. 



T.ABLE 6.— IONIZING ACTIVITY OF DRIED PHOSPHORUS. RUBBER BUSHING 

 INSERTED FOR INSULATION. INITIAL POTENTIAL DIFFERENCE, 



/?„ = 40 VOLTS. So = 74- 



TA!!LE 7.— IONIZING AC'I'IVirV OF DRIF.D PHOSPHORUS. RUBBER BUSHING 

 REMOVED. INITIAL POTENTIAL DIFFERENCE iE'n =40 VOLTS. .f„ = 73- 



