88 REPORT—1904. 
RUTHENIUM—continued. 
Spark Spectrum gett ie 
Wave-length | Intensity Oscillation 
erect) z Reda ais : 5 ay 
Arc Spectrum Adeney Haschek aracter | y 4 == in Vacuo 
3434°325 3434°33 0 0:96 | 8:2 29109°6 
* 33°406 33°41 3433°45 4 ” ” 174 
* 32-909 32°91 32°9 4 ” ” 21:5 
32°560 32°5 0 “6 > 24°6 
* 32°354 32°35 3 3 7 26°2 
31°905 0 FY) “ 37°3 
* 30°910 30°91 31:05 4 . “6 38°5 
30°568 30°6 0 as + 41-4 
* 29:702 29-70 29°6 4 os oe 48°8 
* 28-790 28-79 | 28°60 2 “o = 56°5 
* 28°476 4r <j SS 59:2 
27°717 27°72 0 3 on 65°6 
* 26:120 26°09 | 26:2 2 7 Bs 79°2 
e f 24:5 1 ” ” 
PRAMAS || ae 1 nities’ | eee! 
22°578 2 > » | 29209°4 
20°881 0 “p 53 23°9 | 
* 20:243 20:24 20:2 4 + = 29°3 
20:0 In 99 | 
* 19°394 19°39 2 oc + 36°6 
*" 187125 18°13 18°] 2 , ” 47°5 
17°790 1 0°95 6 50°4 
* 17:493 17°49 17°45 7 % ” 52°9 
16°90 16°7 1 eS aca 58°0 
* 16°329 16:33 16°4 1 aS “5 62°9 
15°6 1 ” ” | 
* 14:787 14°79 14-7 3 op as 76:1 
145 1 ” ” 
14:422 2 LP 95 8:3 79:2 
14:130 0 as sein 80°7 
13°870 0 “p seal 75°4 
* 12:947 12°95 12°8 3 or “ 91°9 
12:221 2 “co of 98-1 
e768 si7 116 4 % 9 29302°0 
10°84 10-7 2 AG 55 100 
10-10 ” ” 
09-707 2 1 As 19-7 
* 09420 09°42 09-42 5 x 22°2 
09-2 2 ” ” 
07-042 0 0 AS 42°7 
2 Wayets 2 3 oS 45°3 
* 06-017 2 = BS 51°5 
05°426 0 s5 BS 56°6 
03°924 03°7 1 “n = 754 
02:7 1 cy) ” 
02-00 4 p 0 
* 01:878 01:88 3 = Ps 87:2 
* 201-637 01°64 | 2 = 3 89°3 
01:°304 O14 0 a “O 921 
00-890 2 99 » 95°8 
00°738 | 1 oO FD 97:1 
* Rowland and Tatnall: 3433-397, 3432-896. 3432-348, 3430-908, 3429-689, 
3428°769, 3428°460, 3426-089, 3420-236, 3419-389, 3418-117, 3417-466, 3416-320, 
3414-782, 3412-939, 3411-780, 3409-424, 3406-731, 3406-025, 3401876, 3401-646, 
