130 
REPORTS ON THE STATE OF SCIENCE. 
IRIDIUM— continued. 
Are Spectrum 
Spark Spectrum 
Wave-length 
Kayser 
4316-456 
11669 
10-750 
05°359 
01-776 
00802 
4286°776 
69-101 
68:251 
66:532 
65°450 
62:051 
61-408 
59-280 
57°528 
43-944 
41:198 
40°644 
30°486 
23°327 
20:950 
18-428 
18-243 
17-908 
12°383 
Exner and 
Haschek 
Intensity 
and 
Character 
Wave-length 
Exner and 
| 
Intensity 
an 
‘Hadehek Character 
431168 
10°76 
06-10 
01-79 
4286°79 
68°25 
65°47 
59:26 
21-25 
BSworm 
oooo 
4328°8 
24:7 
a 
Sioa eae 
PB 
fm ee et ee et et 
oa 
tl ell coll ell So Melee el 
| Reduction to 
Vacuum 
Ld 
A+ 7 
1:19 | 6°4 
” 7 
1:18 5 
” 29 
” 99 
” > 
99 9 
99 ” 
; 6°5 
” 9 
” ” 
” ” 
29 > 
be ” 
39 99 
” ” 
39 | 99 
3 | 39 
EN y/ 9 
99 99 
29 > 
> ”? 
2? 99 
9 9 
99 9 
99 | 99 
99 99 
29 29 
” > 
? j 7 
” | 2° 
Prk keke 
”? > 
” | 2 
1:16 cf 
Oscillation 
Frequency 
| in Vacuo 
