ON WAVE-LENGTH TABLES OF THE SPECTRA OF THE ELEMENTS. 



89 



Manganese (Arc Spectrum). 

 Hasselberg : ' Kongl. Svenska Vetenskaps-Akadem. Handl.,' Bd. ssx., No. 2. 



1897. 



* Coincident with Fraunhofer lines. 

 J These lines seem not to occur in Exner and Haschek's list of manganese spark 

 lines, Kitzber, ' Kais. Akad. Wissensch. Wien.' civ. (1895), cv. (1896). This list in- 

 cludes 1,550 lines, extending from 4824 to 2112. Within these limits all the lines 

 of the arc spectrum not marked J seem to occur. 



