SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOLUME 68. NUMBER 3 



EFFECT OF SHORT PERIOD VARIATIONS 



OF SOLAR RADIATION ON THE 



EARTH'S ATMOSPHERE 



(With Eight Charts) 



BY 



H. HELM CLAYTON 



Argentine Meteorological Service, Buenos Aires 



(Publication 2446) 



CITY OF WASHINGTON 



PUBLISHED BY THE SMITHSONIAN INSTITUTION 



MAY, 1917 



