16 



THE STRUCTITRE OF THE NUCLEUS. 



ill the liist iustaiKf are due to niu-lei, there must be a corresponding result in the 

 volume per minute of the saturated eraauation necessary to produce a fixed color 

 (blue) in the color tube. The reverse is the case, as will be seen in the following 

 table where nuclei and ion proil notion are in a measure leciprocal occuirences. In 

 other words, the initial enormous conductions are accomi)auied by an abstraction 

 of nuclei. 



Thiee phosphorus strips were im usual dried in piess between folds of bibu- 

 lous paper and then exposed to air for some time. They were then inserted into 

 the tube, ab, of the water bath, figure 1. The initial (apparent) ionization as tested 

 by the condenser was invariably too intense to be' measurable. The condenser was 

 then removed and a short tube, C, added to obviate excessive absorption before 

 discharging into the color tube. 



In table 8 the liters of dry air which iiave passed over the phosphorus strips 

 are fiven under Z. The successive liters of emanation per minute to produce the 

 standard blue are given in the third column (dV/dt); the fourth gives the current 

 when the emanation passes through the condenser at the fixed rate of .5 lit./min. 

 selected foi- convenience. 



T.ABLK 8. — CONDENSATION-PRODUCING ACTIVITY OF THE INITIAL ("WET") 

 AND FINAL ("DRY") PHOSPHORUS EMANATION. TEMPERATl~RE iS°. CUR- 

 RENT IN CONDENSER DUETO.5 LITERSOFEMANATION PEK MINUTE, s^ = 73. 



Culur. 



Bl 

 Bl 



Bl 

 Bl 



Remarks. 



Condenser discharged within 7 *"■ 



Condenser discharged in 10 *"• 

 Current estimated. 

 Phosi)honis " dry." Insulation 6.5. 

 Ionization constant. Sa/s^ — .21. 



ANOTHER EXPERIMENT; PHOSPHORUS GRID SCOURED TEMPER.ATURE 21°. 



Bl 



Bl 



Bl 

 Bl 

 Bl 

 Bl 



(J) lue not attainable due to insufficient nuclei; condenser 



discharged within 7 '" 

 Opaque now attainable; condenser discharged within about 



2o''"'; current estimated. 



Insulation i.o; nearly perfect. 

 Ionization constant; JqAo = 'j- 

 Do. 



The first part of table 8 shows definitely that when the cnri'ents are too large 

 to be even estimated, the emanation needed to produce tlie standard blue is larger 

 than at the end of the experiment where the radial currents have fallen off to their 

 small fixed value. Thus the high conduction is without nuclear condensing effect. 



