57-14 



Proceedings of the American Academy of Arts and Sciences. 



Vol. 57 No. 14— Jtjne, 1922. 



ATMOSPHERIC ATTENUATION OF ULTRA-VIOLET LIGHT. 



By E. R. Schaeffer. 



With One Pi ate. 



Investigations on Light and Heat made and published with aid prom the 



RuMFOBD Fund. 



