1903.] 



The Spectra of Neon, Krypton, and Xenon. 



87 



Wave-lengths. 



4921-68 

 4890-24 

 4887-47 

 4883-68 

 4876-68 

 4862-69 

 4844-50 

 4823-47 

 4698-20 

 4683-76 

 4652-15 

 4615-72 

 4603-21 

 4592-22 

 4585-65 

 4577-36 

 4545-34 

 4541-03 

 4532-67 

 4524-38 

 4481-01 

 4462-38 

 4443-28 

 4434-35 



Intensity 



6 

 5 



r> 



6 



7 



cS 

 10 



(> 



r> 



5 



6 



5 

 10 





 10 



6 



8 



8 



5 



5 



7 



20 

 10 



6 



The total numbers of lines measured in the five spectra are as 

 follows : 



Neon ........................ 164 lines. 



Krypton I .................. 74 



Krypton II .................. 700 



Xenon I 

 Xenon II 



92 

 1370 



There are, 17 lines which are common to the two Krypton Spectra, 

 and 7 common to those of Xenon. 



K 2 



