154 
REPORTS ON THE 
Are Spectrum 
IRIDIUM—continued. 
STATE OF SCIENCE. 
Spark Spectrum 
Wave-length 
Intensity 
K | Exner and Pee 
BBE) Haschek AT ACHEE 
3154:874 3154°85 3 
54:679 54°66 3 
51°748 bI7b In 
50°'727 50°76 4 
50°128 0 
48-346 0 
47-860 47°85 1 
45°17 3 
43-668 0 
42-994 0 
42°371 1 
41-946 1 
40°52 3 
39°704 39°70 1 
36°418 36°56 In 
35°358 0 
33°89 ] 
33°432 33°45 8 nr 
33°210 33°23 3 
28-510 28°51 3 
24-203 24:20 1 
24-024 0 
23°334 2 
22°82 i 
22-509 22°50 3 
21-894 21:91 4 
20°885 20:90 5 
19°422 0 
| 
| Reduction to 
Wavye-length Vacuum Oscillation 
Intensity __________| Frequency 
Fienoe eed and | 1 in Vacuo 
acnkeie i Character A+ x 
3155-2 In 0°89 | 9:0 31685: 
54:8 2 ” ” 88:1 
54:7 1 ” ” 90:0 
52°7 1 ” ” 31710: 
ply In as 3 19°4 
50°7 1 ” “ 29-6 
”» ’ 35:7 
49°6 1 FA = 41: 
49:0 1 PP A 47: 
” ” 53°7 
48°1 1 Pe a 56: 
47°9 1 c as 58:7 
46°9 1 os 9-1 68- 
46°6 1 35 be 71: 
45°7 In + 7 80- 
45°2 2 ” > 85-7 
44°5 1 a A 93° 
44°4 1 a 94- 
44-0 1 oo “A 98: 
” ” 31800°9 
9 29> 07:7 
99 99 14-0 
” ” 18°3 
41°2 2 0:88 “1 26- 
40°4 1 a =) 32°8 
” ” 41-1 
38°6 In S Fr 52: 
378 6 ; hnee 60- 
” ” ton 
30°D In Pe “ 84: 
” ” 85:2 
35:0 In A re 89- 
34:2 1 sat | nae 97° 
a Ps 31900°1 
33°4 6 He eee: oa 
°° | 99 0 0 
32°7 1 aS & 12- 
32°3 1 = a 16: 
29°9 1 9 99 41: 
29-7 1 55 5 43° 
29°3 ] Po 5 AT: 
28°6 2 a a 55-0 
26°9 1 5 s 72° 
25:0 1 PA a 91: 
24°3 1 3 a4 99-1 
; Nhe 32000°9 
LED | 9 08-0 
22°62 3 - 4a 
” ” 1 i 
22-1 4 3 9 22-7 
20°9 2 : ie 33-0 
20°5 | i oe ab 37° 
198 | 1 - 2 44: 
| 48°1 
