Proceedings of the American Academy of Arts and Sciences. 

 Vol. XXXVI. No. 14.— January, 1901. 



FALSE SPEQTRA FROM THE ROWLAND CONCAVE 



GRATING. 



By Theodore Lyman, Ph.D. 



With a Plate. 



Investigations on Light and Heat made and published wholly or in part with Appropriations 



from the rumford fund. 



