57-1 



Proceedings of the American Academy of Arts and Sciences. 



Vol. 57. No. 1, — December, 1921. 



THE GRID STRUCTURE IN ECHELON SPECTRUM LINES. 



By Norton A. Kent and Lucien B. Taylor. 



Investigations on Ligbt and Heat made and publishgd with aid from the 



RuMFOBD Fund. 



