DE. W. M. HICKS: A CRITICAL STUDY OF SPECTEAL SERIES. 



371 



m = 6. 



[29286-33] 

 (3) 29498-44 

 (7) 28808-81 



m = 8. 



212-11 

 309 -b 



KrF (continued). 



6.F 6 



m = 7. 



[28907-8] = u.30791-40 



[29552-20] 

 (2) 29857-70* 



m = 9. 



305-50 



[F,] 



[F,] 



[29728-00] 

 (6)29823-86 



(1) 30036-53 

 (2) 29857-701 



(In) 30777-90| 



95-86 

 308-53 

 129-70 

 1049-94 



* Or (28 t ) F 4 (10). 



t Or F 6 (9). 



t Is probably ( - 30 F\ (7) it. 



m = 10. 



(28j)F 2 



F 8 



(280 F 4 

 (-0 FT 



[29712-00] 

 (3/i) 29845-84 

 (2n) 29926-2:5 

 (1) 30022-82 



It is very diffuse and may be both. 



F' 4 



F' 5 



It will be most convenient to deal with the multiplets order by order. We are to 

 expect great displacements in the f sequences in the first two orders single pairs 

 displaced bodily if the analogy with the triplet systems of the alkaline earths holds 

 in the rare gases. Also throughout the orders we shall find not only in Kr but in the 

 other gases small oun displacements in the limits, owing to the instability of the 

 d sequences. 



m = 2. In the first order there appear only one normal pair Fj (2), F 6 (2) ; biit 

 "s> "e> "T! occur in a parallel set linked to the normal by the e link. 



The following sets occur amongst others : 



(1) 

 (5) 17594 



100-87 (1)17695; 



1049-06 



98-37 



307-84 



(2) 18744 

 (1) 17692*54 

 (In) 18002 



97-85 (2) 18100 



