ON WAVE-LENGTH TABLES OF THE SPECTRA OF THE ELEMENTS. 79 
RUTHENIUM—continued. 
Spark Spectrum 
Reduction to 
Wave-length ae a Oscillation 
(Kayser) i and |... | Btequency 
Are Spectrum Adeney Exner and | Character) , , | }_ in Vacuo 
Haschek A 
43957125 449513 4395°4 Z E21 | 6:3 22746'1 
B Ol-19) 91°19 91°5 4 1:20 fe 66°5 
* 90°614 90°61 90°60 6 = ; 69°6 
89°547 89°4 0 ” ” 75°1 
89-150 2 4 - tel 
* 86°431 4386°43 86°6 4 a a3 91:3 
86:1 + a5 : 
* §85°823 85°82 85°85 5 3: ” 94°4 
* 85°563 85°56 85°60 5 ” ” 95°8 
* §83°530 83°53 83°7 2 ” ’ 22806°4 
81-421 81:42 81-7 2 ” ; 173 
76°745 768 1 - a 41°7 
73°9 1 9 ” 
73°4 1 oc c 
* 72°381 72°38 72°38 5 ” » 64°5 
71°52 71°6 2 ” > 68°8 
* 71:363 4 = a 69°9 
70°580 70°9 2 on fe 74:0 
65°741 0 “E 6-4 99-2 
64-270 64°6 2 ce ; 22906°9 
63°5 1 » ” 
62°872 63°2 1 “ ac 20°3 
* 61-581 2 = a 21:0 
* 61°372 61°37 61°40 5 “e Ke 22-1 
58°5 In a 33 
57:031 57°6 1 -S ** 45°0 
* 54-960 54°96 55:2 3 1-19 3 55°9 
* 54:300 54°30 54°32 6 5 “ 59°4 
50°632 0 op of 78°8 
* 49°868 49°86 49°90 5 “A “ 82°8 
* 46°640 46°9 a a oa 99°9 
43°178 43°7 0 = 95 230182 
* 42-243 42°24 42°25 6 ” ” 23°2 
41-204 41-4 2 ” > 28°6 
40°503 40°7 2 or a 32°4 
40°0 In oe) ” 
38°829 39°1 2 ” » 41°3 
* 37:427 37°43 37°6 4 os “ 48°7 
373 1 ae re 
* 36°584 36°58 36°7 2 te 59 » 53°2 
33°1 1 |» » 
32°789 32°9 0 PP “5 73°4 
32°655 32°66 2 ” ” 74:1 
* 31°321 31°32 315 4 ~ aH 81°8 
28-712 29-0 2 = “ 95:2 
* 27°588 27°59 27°8 3 , ” 231012 
27°489 2 ar a 01°7 
* 26-987 26°99 27:2 Pt 4 ” ” 04:4 
* 25°215 25:22 25°4 4 35 = 13°8 
23°626 0 a * 22°3 
23-120 23°15 23°3 2 Os > 25°0 
21°450 2 Los 340 
* Rowland and Tatnall: 4891-191, 4390°605, 4386-436, 4385°814, 4385°553, 
4383'526, 4372-363, 4371°366, 4361:597, 4361°371, 4354969, 4354-296, 4349°867, 
4346°645, 4342°236, 4337-431, 4336-591, 4331-329, 4327°590, 4326-986, 4325-213. 
