SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOLUME 95. NUMBER 23 



IRoebliiio jfunb 



ON THE CORRECTIONS TO BE APPLIED TO 

 SILVER-DISK PYRHELIOMETRY 



BY 

 C. G. ABBOT 



Secretary, Smithsonian InstitutiM<jf\\SONIAN j/VS77l 



MAR 10 1937 



T-'tal. 



/(^ 



(Publication 3409) 



CITY OF WASHINGTON 



PUBLISHED BY THE SMITHSONIAN INSTITUTION 



MARCH 10, 1937 



