SMITHSONIAN CONTRIBUTIONS TO KNOWLEDGE 



- PART OF VOLUME XXXIV - 



A CONTINUOUS RECORD OF 

 ATMOSPHERIC NUCLEATION 



BY 



CARL BARUS 



HAZARD PROFESSOR OF PHYSICS IN BROWN UNIVERSITY, PROVIDENCE, R. I. 





(No. 1651) 



CITY OF WASHINGTON 

 PUBLISHED BY THE SMITHSONIAN INSTITUTION 



1905 



