194 



REPORT 1892. 



Sodium — continued. 



Lines within brackets not measured by Kayser and Runge. 



Potassium. 



Kayser and Runge (' Ueber die .Spectren der Elemente.' Berlin, 1890). 



Wave-length 

 (Rowland) 



7699-3 1 

 7665-6 / 

 69388 

 6911-2 

 6832-23) 

 5812-54 f 

 5802-01 r 

 5782-67) 

 5359-88) 

 5S43-35 I 

 5310-08 r 

 6323-55 J 



Limit 



of 

 Error 



5-0 



0-5 



0-5 



0-05 



0-15 



Inten- 

 sity 

 and 

 Cha- 

 racter 



lOnr 

 lOnr 



4n 

 2n 

 6n 

 6n 

 4n 

 2n 

 4n 

 4n 



I 



Previous 

 Measurements 



Fraunhofer 



Lines in 



Rowland's 



Map 



7696-5 Deslandres 



7663-2 



6946 L. de B.* 



6913 



5831 



[5812 



I58O2-I Thalen 



5782-6 „ 



5353-6 „ 



5338-6 



6334 5 



5322-6 



L. & D.f 

 Thalen 



absent 



Reduction 

 to Vacuum 



A.+ 



Oscillation 

 Frequency 

 in Vacuo 



12984-5 

 13041-5 

 14407-5 

 14465-1 

 17141-0 

 17199-1 

 17230-3 

 17288-0 

 18651-6 

 18709-2 

 18720-7 

 18778-9 



