ox WAVE-LENGTH TABLES. OF THE SPECTRA OF THE ELEMENTS. 295 



Sodium (Spark Spectrum). 

 Eder and Valenta: 'Deukschr., Wien,' Bd. Ixi. 1894. 



Wave- 

 length 



*t7699-3 



47665-6 

 +6938-8 

 +6911-2 



*t5832-2 

 -^5812-5 



♦-f5802-0 



Potassium (Spark Spectrum). 



Eder and Valenta: ' Denkschr., Wien.,' Bd. Ixi. 1894. 



Wave- 

 length 



*t5782-7 



t5359-9 

 «t5343-4 



t5340-l 



t5323-6 



t5112-7 

 *t5099-3 



Occurs also in the Flame Spectrum. See Report, 1894 

 Occurs also in the Arc Spectrum. See Report, 1892. 



