SMITHSONIAN CONTRIBUTIONS TO KNOWLEDGE 

 1373 



THE STRUCTURE OF THE NUCLEUS 



A CONTINUATION OF "EXPERIMENTS WITH 



IONIZED AIR" 



BY 



CARL BARUS 



HAZARD PROFESSOR OF THYSICS IN BROWN UNIVERSflY, PROVIDENCE, R. I. 



CITY OF WASHINGTON 

 rUBLISHED BY THE SMITHSONIAN INSTITUTION 



1903 



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