ON WAVE-LENGTH TABLES OF THE SPECTRA OF THE ELEMENTS. 259 
CHLORINE (VACUUM-TUBE)—continued. 
Pres- | 
Pressure Pressure sure 70 ' Reduction | 
10 to 20 mm. 80 to 40mm. | to 100 'to Vacuum | 
a : Oscillation 
Z Previous Measure- | Frequency 
‘Inten- |Inten-| Inten-| ments (Rowland) | in Vacuo 
Wave- sity rave: sity | sity ly 
length fand| 227sth | ona | and | at | =| 
eeeiera| 0, | Cha- | Cha- coped 
(a) 3 land) (b) | ccter iz 
racter racter | racter | | 
4343°822| 10s |4343°82 | 10sr 43471P.,alsoS. | 1:19 64) 2380148 
36°371| 5s 36°39 5s s 39°4 P. ane, atl gs | 54-4a| 
33125] 1. . ea tene 77 
23°523| 6s 23°54 4s ry = | boat] { 122-9a 
09-139] 3s 09-19 4b b i 137 iB also 8. 118) 5 | | 99:8a 
07:593| 6s 07-627| 8s Ss b 6S 208 3a 
04:211 4s 04:20 6s 58 4) 5 26-6a 
4291°361} 5s |4291°884, 6s s 4295-6 P. Vit, | a 93-4a 
80°615}| 3s 82°6 P. e174) 35 3547 
76628 | 4s 76°719| 3b* by 78:8 P. Nek ” 76:4a 
70'725 |. 3s 70°855 | 2be [she 3 . 408°7a 
_ 64740) 3s 64-769 | 2s n % 7 41-6a 
61:°350| 3s 61421) 4b b Bs ” 60°2a 
59°628| 4s 59°640| 5s s D0-< P-5 also) 94 URIs, ” 69°7a 
53'532 | 9s 53°638 | 10b¥ by ie 4! (6:6 503:3a 
41°435| 8s 41:474| Sby by SL GH gs TO-3a 
35°608) 3s 35°683 |} 4b’ le, af 602°8a 
34187} 5s | 34-198] 5br Nae |e 10-9a 
26°580| 7s 26°585| 4s s ets is 53:2a 
25:139) 1 i Sa | ae 61:3 
09-866) 5s 09°861| 4s ts; Be 7T47-1a 
08160} 4s | 08-209) 3b* b aes | ee 56°8a 
1189379} 1n | 1-15] G7] » 863-2 
4158-021) 4s 58°001| 5b } 114 ,, |r 24643-2a | 
49°631| In ee Fe 91:8 
47-203| 4s 47°356| 5Sbr LY | » | 68] 105°9a 
33°834| 3s | 33-955] 3 eel 83:8a 
32°680| Ss 32°719| 9bv br |4130°8 S. cs ” 90-6a | 
30991, 4s 31-088} +bv PSA is 200-5a 
30°34 | In 30°304|} In br ie reson (teary OL Ba 
24153} In PIG) Asie 406 
04965, 4s bagi e Th a2) 354-0 
4054:242| 2n } 111) 6-9} 658:°6 
| 40-710} 2n L Ta |] TON) 74 
4032-330) 5s 32-368) 3s poh er an | eee 92:6a 
13991°625| In } 1:10) 71) 25045-4 
82:060| 3n | eth: a a 105°5 
6.770} 2n 109) ,, | 284-1 
55°582| 3n | Peds. Say sleet (3:5 
3917:721)| 2s 17762) 4s by TFOSHI-;, 517-9a 
16832) 4s 16°870| 5s bee 23°6a 
14055} 5s | 14105| 6br |: by | a ie 41-Ta 
3884:045| 2b | br }107) 73}! 7391 
83'454| 2* | 5 Laer = 43-0 
71:537| 4b | b Really ho 8222 
68°344| 6s | bY een 402 
66103) 1s bie. 586 
63°'726| 2b b> a i+4 
3861008 10s | 61:006! 10s | br | ie | 92:7 | 
* Possibly not due to Chlorine. 
