THE STRUCTURE OF THE NUCLEUS. 



11 



tivcts as conceived by Leiiard, also vary with conceiiti-atiou, a second method of 

 ex[)hiiiiiiig tlie present occurrences is suggested, to which greater prominence will 

 be given at the end of Chapter VI. 



Figs. 6-io. — Variation of the Logarithmic Rate of Electrical 

 Discharge with Temperature, (dsjdi)^ /sg and 9. 



Fig. II. — Ionization Due to Dried Phosphorus in the Lapse ok Time. 



13. Electrical expet'iments repeated. — It is doubtful whether the color experi- 

 ments can be much improved. These results are bound to lack sharpness; but the 

 electrical experiments are open to further development in the first place by 

 retaining a constant velocity d V/dt throughout. This may be done by inserting 

 a second stop-cock, F' (not shown), to clieck the air current to a fixed value, even 

 when F, figure 1, is quite open. In the second place the weakly ionized emana- 

 tion at low temperatures should be tested directly as to its condensational power. 

 One may inquire whether the reduced condensing power of the positive and the 

 negative ionizations differ; whether at a given temperature definite ionization 

 is obtainable quantitatively; etc. 



In table 5 results obtained by the same method as above are summarized for 

 brevity. The volumes, ^ F/c?;! (liters/min.), of air chai-ged with phosphorus emana- 



