——— Src lh 
ON WAVE-LENGTH TABLES OF THE SPECTRA OF THE ELEMENTS. 139 
IrR1IDIUM—continued. 
Are Spectrum Spark Spectrum 
2 = - — Reduction to 
Wave-length Inten- | ene Inten- bib ates Inten- | Mages’? Oscillation 
ee a sity sity sity |___————_—| Frequency 
and and and | in Vacuo 
Exner | cha. | Exner-| Gha- Cha- | 1 
pees Cae | racter | Haschek | pene a racter | a 
373969 | O-In | 1:04 | 7°5 26737:0 
3738°682 | 3738-66 2 3738'6 | 4 38°67 | 0°3 ” ” 40:0 
36°19 | O-1 1:03 PP 57°7 
35°60 | Ov1 ot, “6 62:0 
34:900 34:90 3 34:8 6 6 as 67:0 
34:54 | O-1 or a 69°6 
344) 1 » ” que 
34:0 1 34:05 | 0:2 ” ” 73°1 
33°4 1 ” ” 78° 
33°3 1 33:25 | 0-1 » ” 79°8 
32°7 1 32°76 | O-1 = oh 82°3 
32°1 1 ao b 87° 
31:504 31°51 2 31:3 6 31°51 | 0°8 ” » 91:3 
30°58 3 30°6 30°60 | 1 ” ” 97:9 
29°75 | 0-:2n Fy = 26804:0 
29°40 | 0-1 re on 06°5 
28°16 5 28:1 2 28°19 | 1:2 “ 76 15-2 
27°4 1 27°57 | O-3n ” » 19°5 
27:05 4 27:0 2 27°10 | 1s - cf 23°1 
26:25 | 0:3 “0 = 29:0 
25°536 25°55 2 25:6 4 25°57 | 0:7 ” ” 34:0 
24°75 | O1 6 x 39°8 
23°61 | 0-3n ry as 48:1 
22:904 3 22°9 2 5 Es 53° 
2276 | 2 22:57 | 0°6 Hf 3 55-6 
22:2 1 22°12 | O-1 ” ” 78°8 
21:628 1 21:7 Ut 21°65 | 0-2 F = 62°3 
21:2 1 ne = 65° 
20°93 | O-In a o 67:4 
19°51 | O-In 35 a aided 
17°6 1 Rs 5 91- 
17:14 | O1 5 ae 94:8 
16:34 | O-1b 3 A 26900-6 
158 1 AS a 05- 
14°5 1 14:48 | O-In rf rf 14:1 
13°85 | O-1 cfs “r 18:6 
12°86 | 0°5 =p 5 25°8 
12°630 12°66 2 12°7 4 re hy 273 
11-5 1 ” ” 36° 
11:27 | O-In H be 373 
10°53 | O-1ln rs - 42°7 
08°8 1 08°83 | O-ln oD ap 55:1 
08-3 Jn 08°18 | 0:2n Ff ch 59°8 
07:147 OF-L7 07-1 1 07:14 | 03 fe “A 67°4 
06°7 1 06-70 | 0-2 os “3 70°6 
06:20 | O-In cc op 74:2 
05°8 1 of 33 77° 
05°5 1 05°43 | O-1 cc “ 79°8 
04°57 | O:In sp “ 86-1 
03°7 1 Be ch) 92- 
03°5 1 03°40 | O-In a 5 94°6 
01:107 ea. 01:2 4 01:08 | 0°8 ce + 27011°4 
3698-261 | 3698-25 2 | 3698-1 3698°27 | 0-5 op oF 32°1 
