SMITHSONIAN MISCELLANEOUS COLLECTIONS 

 VOLUME 111, NUMBER 12 



NOTE ON 



FOWLE'S SPECTROSCOPIC METHOD FOR 



THE DETERMINATION OF AQUEOUS 



VAPOR IN THE ATMOSPHERE 



(With One Plate) 



BY 

 L. B. ALDRICH 



Director, Astrophysical Observatory 



(Publication 3989) 



CITY OF WASHINGTON 



PUBLISHED BY THE SMITHSONIAN INSTITUTION 



SEPTEMBER 20, 1949 



