Compliments of the Author. 



76 7^^" 



A PHOTOGRAPHIC STUDY OF ARC SPECTRA. 

 By Caroline Willard Baldwin. 



(Reprinted from the Physical Review, Vol. III., Nos. 17 and 18, 

 March- April and May-June, 1896.) 



[^ Thesis for the Degree of Doctor of Science, 

 presented to the Faculty of Cornell University, 

 June, /c?p>] 



