92 REPORT—1904. 
RUTHENIUM—continued. 
| Reduction to 
Spark Spectrum 
Wave-length 7 Z Intensity | Vacuam Oscillation 
(Kayser) E a a Frequency 
Arc Spectrum Adeney mo hart Character | , 4 <— in Vacuo 
289°389 3289'S 2n | 0-92 | 86 30392°2 
3286°55 86°8 | 1 $ 8:7 30418°3 
86:040 1 sys 23°0 
85°505 85°7 2 9 “5 28°0 
* 85-067 4 ” | ” 32°1 
84:46 84:5 1 slew cs 37°7 
84:3 2 ” ” 
82-744 by B2e5 | 0 er Bt 53°6 
81-995 2 Ais ites ce 60°6 
81-735 81-74 | S815 0 53 Saul 63-0 
81:26 81-2 1 a on 67°3 
80:°678 1 * BS 729 
80599 80°5 2 ” 73°5 
79521 2 4 83°5 
* 717-699 77°70 77°6 4 = + 30500°5 
76°820 76°6 0 » 39 08°7 
75°87 75°7 1 es ears 17°5 
* 74°831 74:83 74:7 5 ” ” 27:2 
73°765 73 77 73°6 0 » ” 371 
tee Boal yl 73°22 73°1 5 ” oo | 42:3 
72°366 0 sere <5 50:2 
72°0 In of || 
71-746 0 ” ” | 560 
71:2 In ae an | 
70388 70°2 2 a of 68°7 
69°80 sorte IMGs, ot 
69:°336 2 * 3 78°5 
69-087 69:05 68°93 2 ay eer 80:9 
* 68°345 68°35 68°3 5 sae Wes 87:8 
67°269 67:2 Os 0 phere fee es Si9 
67:07 | ” ” 
66°588 66°59 66°4 4 ” » | 80604°3 
66:1 1 ” ” 
* 64:808 64°81 64:90 2 és ail 31:0 
* 64:692 | 32:1 
* 63-988 63:9 3 7 Fey 39°7 
63°740 | 63°7 3 oa os 41-0 
62°5 Os | 0 ob) xo 
61-7 In ENE es 
* 61-257 61°1 1 or = 54°3 
* 60°494 60°49 60°45 3 as Pass | 61:5 
* 60°304 | 60°30 60°1 5 alle eee 63°3 
* 69-811 59°81 59°6 2 Sel eA 67:9 
59-111 59°11 59:0 4 OSes 74:5 
* 58°176 58-18 58-0 0 ” ” 83°3 
57°94 57°7 3 PA a 90°6 
572 1 ” ” ‘ 
56°746 0 D eS 96'8 
* 56°477 56°48 56°3 4 “ - 99°3 
55'356 55:2 1 » ” 30709°9 
55°173 0 2 a 11-6 
* 54°856 54°86 * 54°6 4 oF 3 14°6 
* Rowland and Tatnall: 3285-066, 3277°697, 3274°834, 3273:208, 3268°346 
$264:790, 3264°688, 3263:984, 5261-256, 3260-477, 3260°301, 3259-805, 3258-173 
3256°460, 2254°834, 
