162 
REPORTS ON THE STATE OF SCIENCE. 
IRTDIUM—continued. 
Are Spectrum 
Spark Spectrum 
Wave-length 
Kayser 
2883°549 
82-970 
82-742 
81-270 
80°324 
80°174- 
79°878 
79°515 
78°632 
77°781 
77-108 
76:096 
75°721 
73°929 
72°227 
70-698 
70-304 
69°815 
66-798 
63°955 
62:°455 
60°767 
60-126 
59-138 
57-058 
56-048 
55-931 
54°722 
53°416 
52°605 
Haschek 
2883°55 
82:77 
81-30 
80°29 
79°51 
77°79 
76°10 
75°72 
75°10 
73°46 
69°80 
68-70 
66°76 
63°95 
62°60 
62°49 
60:77 
57:05 
56-03 
55-96 
53:43 
Exner and | 
Intensity 
| and 
\Character 
Wave-length 
Exner and 
Haschek 
and 
Character 
Intensity} 
Reduction to 
Vacuum 
acre 
CNOFRRORNWOOFD 
Noo 
ed 
oro 
2884:7 
84-2 
83°5 
82°6 
82:2 
81:7 
81-1 
80:2 
80-1 
79°5 
78°7 
77-7 
77:1 
76:1 
75°7 
73°8 
73°4 
71:9 
ae, 
71:2 
711 
70-2 
69°6 
67°8 
66°7 
65-6 
62:8 
62°6 
61:0 
60°7 
60-4 
60:0 
59:4 
58-9 
58°5 
57:0 
56:1" 
55:7 
55:5 
53°5 
52°6 
ee 
6 
Oscillation 
Frequency 
in Vacuo 
