ON WAVE-LENGTH TABLES OF THE SPECTRA OF THE ELEMENTS. 95 
RUTHENIUM—continued. 
Spark Spectrum Zoe - 
Wave-length | Intensity Oscillation 
(Kayser) 4 and aoa | Frequency 
Are Spectrum Adeney Exner and | Character | , + oes in Vacuo 
Haschek A 
*3189°835 3189°7 3 0:90 | 89 31340°7 
89418 89:2 2 $ BA 44°7 
88°8 1 ” ” 
88-713 88°5 2 “ - 51°7 
* 88-463 3188-46 88°45 5 be % 54-1 
88-057 2 35 4 58:2 
86°867 1 co op 69:9 
* 86-171 86:16 86:0 4 os ns 76°7 
85553 2 FA 5 82°8 
85:276 85:28 85°3 0 3 A 85°5 
84:9 1 ” ” 
84-1 1 9 ” 
83:9 1 ” ” 
83°54 83:4 2 a a 31402°7 
82:0 1 ” 2 
81-312 81-4 0 0°89 “5 24:7 
81-126 0 7 os 26°5 
80:569 0 3 9-0 31°9 
79:380 79°38 79:2 2 45 a 43°6 
78843 1 * fc 49-0 
Pe i159 77°16 77:18 4 a 3 65:6 
76°401 76:2 3 Js fc 73°2 
75°32 75°30 4 re te 84:0 
75:10 4 = aA 
* 74:243 "74:24 74:1 Os? 4 iy 53 94°5 
73°500 2 fe y 31501-9 
73°221 2 53 1) 04-7 
72°778 72°78 72°6 0 oS “, 09-1 
71°352 2 a a 23°3 
70196 70:0 2 Bs Aj 34:8 
* 68-648 68-65 68°5 5 “p r 50:2 
68°355 1 3 * 53:1 
67-514 67°51 67°58 0 a “5 61°5 
66-68 66:4 2 a ris 69:8 
66:24 66:0 2 = a 74:1 
65:507 0 sr re 81:5 
65-307 65°31 1 sp 5 83:5 
65-086 65:0 0 “ cf 85:7 
64-939 64:94 65-0 0 “6 > 87:2 
64:7 1 ” ” 
64:1 1 ; + 
64:0 1 ” 2” 
63186 63°30 63°25 0 Fe ait ea 31604°7 
60-80 60-78 f > A 28°6 
* 60:036 60-04 60:05 4 “f o 36:2 
59:003 Cai? 59-00 58-7 4 cp » 46°5 
57°739 57°5 2 a ss 59-2 
57°3 1 ”? ” 
571 1 ” » 
56:917 2 a % 67°5 
56°733 0 ne s 69°3 
55°90 ” » 
55-4 1 ” ” 
* Rowland and Tatnall: 3189-843, 3188-468, 3186:162, 3177°170, 3174-254, 
3168°678, 3160-042. 
