ON WAVE-LENGTH TABLES OF THE SPECTRA OF THE ELEMENTS. 167 
TRIDIUM—continued, 
Are Spectrum 
Spark Spectrum 
| 
Wave-length 
2732-752 
31-954 
30°500 
29-638 
28°494 
28°224 
26-566 
24-884 
23°849 
, 
23°248 
21-443 
20-534 
19-906 
17:730 
16-612 
14-643 
137195 
12°817 
11-402 
10°177 
08-752 
07:265 
06-985 
05-632 
Exner and 
Haschek 
2732-75 
30°79 
29°64 
26°56 
23°85 
23°68 
20°55 
13°95 
12°82 
10:18 
05-65 
| 
a | Intensity 
and 
(Character 
Re oOb 
onwo 
CD 
Ce ) 
| Wave-length | 
Exner and 
Haschek 
2732°5 
31-2 
31-1 
29-6 
28°8 
28°6 
28°0 
27°6 
26°9 
26°6 
25°6 
25°3 
24:8 
23°7 
23°3 
22-7 
22°3 
20-9 
20°4 
18-9 
18-6 
16-6 
16°5 
16-1 
15-2 
14-1 
12°8 
12°3 
12:0 
11°6 
10°8 
10°6 
10°3 
09-5 
09-2 
08:8 
08-7 
07:9 
07-7 
07:3 
07-1 
05°5 
a 
Char 
Intensity 
nd 
— 
» 
fel pe ee 
Reduction to 
| Vacuum 
acter A+ 
0-78 | 10°6 
| 
| Oscillation 
_, Frequency 
| in Vacuo 
