414 PROF. F. W. DYSON: DETERMINATIONS OF WAVE-LENGTH FROM SPECTRA 
Spectrum 
of 
chromospher 
Wave- | No. of 
length. | photos. 
e. 
Inten¬ 
sity. 
Element. 
Probabl 
Wave¬ 
length. 
e identification. 
Intensity. 
Spark. 
Arc. 
Sun. 
3628'89 
5 
2 
Y 
3628-85 
10 
7 
2 
3629 -60 
2 
0 
— 
— 
— 
— 
— 
3630-13 
3 
1 
Zr 
3630-16 
5 
1 
1 
3630-88 
8 
4 
Sc 
3630-88 
100 
3 
4 
3631*64 
9 
2 
Fe 
3631-61 
10 
6n 
15 
3631-90 
1 
0 
— 
— 
— 
— 
- 
Possibly enh. Cr. 
3633-26 
9 
2 
Y 
3633-28 
30 
4 
2 
3633-62 
2 
1 
Zr 
(3633-70) 
6 
— 
— 
3634-41 
4 
1 
He 
(3634-39) 
2 
— 
— 
3635-55 
3 
1 
Ti 
3635-61 
8 
9 
4 
Identified in sun as Ti, Fe. 
3636'69 
2 
0 
Zr 
3636-62 
4 
1 
1 
3637-42 
1 
0 
— 
- 
— 
— 
— 
3639-66 
2 
1 
Pb 
3639-66 
20 
10 
i 
f Fe 1 
f 5 
6 1 
• 
3640-50 
3 
1 
3640-54 
6 
l Cr J 
l 2 
- J 
3641-45 
11 
4 
Ti 
3641-47 
20 
4 
4 
3641"96 
1 
0 
Cr 
3641-97 
4n 
— 
i 
3642-92 
11 
4 
Sc 
3642-91 
50 
3 
2 
3643-27 
2 
1 
— 
— 
— 
— 
— 
3643-90 
4 
i 
— 
3643 -95 
— 
— 
3 
3644 -51 
1 
0 
_ 
_ 
_ 
_ 
_ 
1 
>As one line, 3644-74, intensity, 1 on another photo. 
3644 -80 
1 
0 
— 
— 
— 
— 
— 
J 
3645-48 
9 
3 
Sc 
3645-47 
15 
1 
3 
f Ti 
3646-34 
4 
5 
1 
3646-32 
2 
0 
L Gd 
(3646-36) 
12 
— 
— 
3647 -29 
1 
0 
— 
— 
— 
— 
— 
3647 -92 
6 
2 
Fe 
3647-99 
9 
8 
12 
f Fe 1 
f 4 
4 I 
3649-66 
3 
1 
3649 *65 
\ 
\ 
5 
Probably Fe. 
l La J 
l 1 
5 J 
3650 -50 
2 
1 
Cr 
(3650-50) 
5 
0 
- 
3651 *64 
1 
1 
Fe 
3651 -62 
4 
6 
7 
3651-89 
7 
3 
Sc 
3651-94 
20 
1 
4 
3654-07 
1 
0 
— 
— 
— 
— 
— 
3654 -78 
1 
0 
— 
— 
— 
— 
— 
3655 *14 
1 
0 
— 
— 
— 
— 
— 
3655-93 
3 
1 
• — 
— 
— 
— 
— 
3656 *39 
1 
1 
— 
— 
— 
— 
— 
3658-17 
2 
0 
— 
— 
— 
— 
— 
3658-87 
2 
0 
— 
— 
— 
— 
— 
3659 -88 
7 
3 
Ti 
3659-90 
15 
4 
5 
Identified in sun as Fc, Ti. 
3660 *73 
1 
0 
Ti 
3660 -77 
4 
6 
2 
3661 s 39 
3 
1 
H .' 
(3661-35) 
— 
— 
— 
3662 *35 
8 
3 
Ti 
3662-38 
15 
5 
5 
3663 *05 
2 
1 
— 
3662-98 
— 
- 
4 
Identified in sun as Fe, Cr. 
3663 *58 
6 
2 
H , 
(3663-54) 
_ 
_ 
_ 
y 
