DE. W. M. HICKS : A CEITICAL STUDY OF SPECTRAL SERIES. 
371 
KrF (continued). 
m = 0. 
m = 7. 
[28356 
47] 
[fd 
[28907 
8] = 
k.30791-40 
[Fd 
(1) 28664 
88 
308-41 
Eg 
(7n) 29005 
44 
97-62 
(^i) F, 
(2) 26779 
99 
307-71-u 
n.Fg 
(2) 30791 
40 
u 
I\.n 
(4) 30218 
69 
1862-22 
(-SdFs 
(3) 30999 
10 
207-70 + u 
Fj.n 
(1) 28361 
39 
4 
(-25i)Fi 
(3) 31841 
03 
1049-65+ u 
Fv.n 
— 
(6) 28891 
63 
-16 
F'l 
(In) 28574 
61 
213-22 
(-2Si)F5 
(10) 27525 
16 
1047 - 96 - u 
n.(-28pF7 (3)29198 
53 
306 - 90 
F'g 
(1) 30875 
06 
99-24 + u 
F'2.n 
(1) 28340 
49 
-16 
E'l 
(1) 31081 
96 
306 -14 + u 
F'o.n 
(3) 28444 
08 
103-59 
F'3 
(6) 31823 
11 
1047-29+ u 
F\.u 
(5) 32635 
69 
1859-87 + 11 
F's.n 
7)1 = 8. 
■m = 9. 
[29286-33] 
[Fd 
[29552 
-20] 
[Fd 
(3) 29498- 
44 
212-11 
Fs 
(2) 29857 
70* 
305-50 
Fg 
(7) 28808- 
81 
309-b 
^-.Fg 
7n = 10. 
[29728 
00] 
[Fd 
[29712-00] 
[F'd 
(6) 29823 
86 
95-86 
(2Sp F^ 
(3?b 29845-84 
F'4 
(In) 30036 
53 
308 • 53 
Fg 
(2n) 29926-23 
F's 
(2) 29857 
70t 
129-70 
(2SpF4 
(In) 
30022-82 
(-5i)F'g 
(In) 30777 
901 
1049-94 
(-SdFr 
* Or ( 2 Si)F 4 ( 10 ). 
t Or Eg (9). 
I Is probably (- F'^ (7) %l It is vei-y diffuse and may be both. 
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 hodily—if the analogy with the triplet systems of the alkaline earths holds 
in the rare gases. Also throughout the orders we shall hnd 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 (2), Fg (2) ; but 
1^5, i^g, i/j, occur in a parallel set linked to the normal by the e link. 
The following sets occur amongst others :— 
( 1 ) 
(5) 17594 100-87 (l) 17695; 
1049-06 (2) 18744 
98-37 (1) 17692-54 
307-84 (In) 18002 97-85 (2) 18100 
