SHUDDEMAGEN. — RESIDUAL CHARGES IN DIELECTRICS. 521 



shorter charging intervals, and I should not be at all surprised if by 

 these means the " free charge capacity " of a good condenser of paraf- 

 fined paper sheets without the air bubbles could be decreased consider- 

 ably toward the capacity of a condenser of like dimensions using pure 

 paraffin. 



Jefferson Physical Laboratory, 

 Harvard University. 



