SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOLUME 85. NUMBER 9 



IRoeblitio jFunb 



THE DETERMINATION OF OZONE 



BY SPECTROBOLOMETRIC 



MEASUREMENTS 



(With Three Plates) 



BY 



OLIVER R. WULF 



Smithsonian Institution and U. S. Bureau of Chemistry and Soils 





m 



(Publication 3127) 



CITY OF WASHINGTON 



PUBLISHED BY THE SMITHSONIAN INSTITUTION 



NOVEMBER 30, 1931 



