ON WAVE-LENGTH TABLES OF THE SPECTRA OF THE ELEMENTS. 255 



Chromium (Arc Spectrum) — continued. 



Kowland's Normal Lines : 579809, 5754-89, 5731-98, 5709-69, 



5634-16, 

 523312, 

 4994-31, 

 4703-98, 

 4508-45, 

 4254-49, 

 4029-79, 

 3821-32, 

 3583-48, 



5487-96, 

 5202-49, 

 4981-90, 

 4690-32, 

 4494-72, 

 422237, 

 4003-91, 

 3794-02, 

 3564-68, 



5447-12, 

 517391, 

 4934-24, 

 4668-30, 

 4447-90, 

 4199-25, 

 3977-89, 

 3770-12, 

 3540-27, 



5409-99, 

 5146-67, 

 4890-94, 

 4643-64, 

 4407-85, 

 4185-05, 

 3954-00, 

 3754-65, 

 3518-48, 



5379-77, 

 512G-37, 

 4859-93, 

 4629-50, 

 4376-10, 

 4157-94, 

 3926 13, 

 3732-54, 

 3401-47, 



5353-59, 

 5090-96, 

 4824-31, 

 4611-44, 

 4352-91, 

 4121-96, 

 3916-88, 

 3695-19, 

 3464-61, 



5324-37, 

 5083-53, 

 4805-25, 

 4590-12, 

 4318-83, 

 410310, 

 3897-60, 

 3667-40, 

 3455-38. 



5688-43, 



5296-88, 



5050-01, 



4754-22, 



4571-27, 



4293-25, 



4083-75, 



3875-24, 



3640-53, 



5662-75, 

 5266-73, 

 5020-20, 

 4727-62, 

 4563-94, 

 4267-94, 

 4055-69, 

 3843-40, 

 3612-21, 



562 chromium lines coincide with solar lines, and 199 lines have, apparent!)-, no 

 corresponding solar lines. Their intensities are shown in the following Table : — 



