254. REPORTS ON THE STATE OF SCIENCE. 
RuoprumM—continued. 
Are Spectrum Spark Spectrum Redvotanten | | 
= TAS ea a 7 Vacuum | 
Wave-length \Inten-| Wave- | Inten- Oscillation: 
rae SS —| sity length sity || |Hrequency 
| | Rowland | Exner | and |— and | 1 ' in Vacuo 
| Kayser | and | and Cha- Exner and Cha- |) a+ (Pe 
| | Tatnall | Haschek | racter) Haschek | racter % 
| | | | 
| | | 2864:7 1 | 0-81 | 10:1 | 34898- 
2864°517 | 286451 | 3 | B57 all caelas 99°8 
63°8 4 es ny 34909- 
| 63°2 4 of “e 16° 
63:057 63:06 6 . ” 59 17°6 
62-572 | O 5 oe 23°5 | 
61877 | 0 Bal Be 32-0 
61°7 1 of r 34: | 
| | 61:0 1 - : 43° 
| 60:886 | Go-s4 4 ly ee 
| 60-774 Re a fe. 45-5 | 
60°208 | | O ” 3 . 524 
59-908 59°86 | 2 ” 7 56:4 
59°735 59°73 | 2 59°7 1 =p F 58°2 
58:2 In 4 a vind 
| BT a ea A ee Mee 92: 
56:25 | 2 562 | 1 40 » | 35000°8 
55-273 | 4 o> 
54°848 | 54:84 | 2 aS PS 18-1 
| 54-4 1 ” 2 a 24: 
54-237 | 0 ” ” | 25°5 
53°6 1 a 6 33° 
53°5 1 a | 35° 
| | 530 | 1 +i ig 4l- 
52°809 et) oH Ar a5 43°1 
52-459 | 1 ” ” 47°4 
. 52:33 | In 5 5; 49- 
| 51526 per ee 2 z 58-8 
| | 51-2 | 1 2? ” 63- 
| 50-608 | 1 ” ‘ies | 70°2 
50°5 2 ” ” 71: 
49-461 49-43 | 2 | ” ” 84:5 
439 | 1 kee 91: 
| 48°5 1 ” ” 96° 
A727 | A op 10-2 | 35106: 
45°868 45°84 | 2 | 45'8b | 8 oP 43 28°6 
44-917 o- | ” » 40:2 
| | | 44-6 1b ” ” 44- 
44-463 | 44°45 | 4n | ” ” 45:9 
| ager A tin | 45) eS 63° 
42°270 | 42°24 4n | 42°3 1 y 73°2 | 
41-909 | 41°90 4n ” »” (it) 
41-0 2 x. | ties 89- 
39-666 | | 0 ” ” 35205°2 
38°425 38°40 | 2 38°4 1 ” ” 20°8 
| 37°3 In ” ” 35° 
36-799 | | 86°78 | 4 368 | 1 oy * 40°9 
| 365 | 1 : ‘5 45° 
35671 | | 35°61 1 35°6 1 rp F 55:2 
| | 35:52 | 1 4 ss 56-7 
| 34:990 1 ” ” 63°3 
| 34:3 2 55 - 72: 
34-233 34°22 3 ” ” 72°8 
33-981 1 ” 2”? 75°9 
