SMITHSONIAN MISCELLANEOUS COLLECTIONS 

 VOLUME 111, NUMBER 17 



Eoetilins Jfunb 



PERIODIC INFLUENCES 



ON WASHINGTON AND NEW YORK 



WEATHER OF 1949 AND 1950 



BY 



C. G. ABBOT 



Research Associate, Smithsonian Institution 



(Publication 4015) 



CITY OF WASHINGTON 



PUBLISHED BY THE SMITHSONIAN INSTITUTION 



MARCH 22, 1950 



