250 
PROF. A. FOWLER ON SERIES LINES IN SPARK SPECTRA. 
Table XI.—The “ F.P.” Doublet System of Magnesium (Wave-numbers and 
“ Variable Parts”). 
d series. 
s series. 
/ (“ 4481 ”) series. 
1 
p series. 
m. 
Limits <| 
14^ ^ 
OO 
Oi 05 
OO 00 
CLO ^ 
Limits 
40,618-4. 
40,648-9. 
Limits 
f 49,778-0. 
L 49,779-0. 
Limit, 51,464-2. 
n. 
rnd. 
n. 
ms. 
n. 
Vlf. 
n. 
mp 2 . 
mp i. 
1 
(110,836) 
121,269-7* 
(109,576-1)1 
-34,135-91 
-34,044-41 
85,600-1 
85,508-6 
2 
49,779-0 
51,464-2* 
(48,823-6)f 
40,648-9 
40,618-4 
3 
12,660-6 
12,691-5 
27,957-8 
28,483-3* 
22.308- 7 
22.309- 7 
27,469-3 
27,650-0 
27,664-0 
23,814-2 
23,800-2 
4 
22,769-7 
22,800-6 
17,848-7 
22,546-8 
22,577-4 
18,071-6 
32.199- 0 
32.199- 9 
17,579-0 
• 
15,644-3 
15,636-7 
5 
28,249-8 
28,280-3 
12,368-6 
28,133-3 
28,164-2 
12,485-1 
37.571- 4 
37.572- 4 
12,206-6 
11,061-8 
11,057-3 
6 
31,546-9 
31,577-2 
9,071-5 
31,478-8 
31,509-1 
9,139-6 
40,811*3 
8,967-4 
7 
33,684-5 
33,715-0 
6,933-9 
33,641-1 
33,671-5 
6,977-3 
42,913-3 
6,865-4 
8 
(5,473-9) 
(5,502-9) 
44,354 7 
5,424-0 
9 
45,385-4 
4,393-3 
10 
46,147-9 
3,630-8 
11 
1 
(3,050-8)f 
* From Table VI. (mS) ; Is = P oo. 
t From Hicks’ formula for “ 4481 ” series (equation IIP, p. 232). 
| Observed S doublet (Table VI.), S (2); the variable parts in this case are lPg and IP] =S2 oo and S] oo. 
