GASEOUS SPECTRA IN VACUUM TUBES. 113 
CARBONIC ACID. Enp-on TuBe. October 6, 1879. 
(008 
: Left unclaimed 
Colour. Subject of Observation. Intensity. oes W.N. Place. || Impurities. cone for Carbonic 
‘ cil 
Part 1. 
Red. Faintest band, 0°5 = 35 878 Carbon 
Faint haze intervenes, 0°3 
Hazy line on red haze, . il 37 088 Carbon 
Faint broad haze band, : 0°5 37 898 Carbon 
Red line, or Hee beginning of a i} : 
fediband*. 1°5 38 352 } f Carbon 
Scarlet-Red. 
Part 2. t 1 38 366 
ee es ea aaa 15 6 38 379 | t"Carhon 
|_—_——_—_—__—— Red Hydrogen, c 5 | 38 698 Hydrogen 
15 | 39 308 Oxygen 
Light-Red. Bundle of thin lines with haze, a " il fe fen Panto 
_—_—_——_ 0'°5 33 39 858 Hydrogen 
Single line rather hazy, . 1:0 HE 40 091 Hydrogen 
Red band, sharp beginning of, 30 1 40 282 
fading end of, : 0°5 esate 40 622 eID 
Line terminating much haze, 1:0 ce 40 803 Hydrogen 
ip 2 I 40 948 Hydrogen 
| I 41 086 Hydrogen 
Orange. Admirably clear, distinct lines, A sb 1 41 238 Oxygen 
[ 15 F 41 387 Hydrogen 
1e5 I 41 498 Hydrogen 
Thin line in black space, - 1:0 | 41 668 : 
Orange band, intense beginning of, 4 =, 41 771 : 
weak end of, : 0°5 pcos 42 049 Carbon 
A band of haze just resolvable into i 42 098 : 
ultra-thin, close lines, ; 15 42 387 { Nitrogen 
Narrow band almost resolvable, 1:3 42 525 Nitrogen 
|_—___—_—__— Line beginning a band of erg : | 
resolvable lines, : a le En, ete Nitrogen 
fainter end of said band, | 0:4 43 034 
Line, : 15 | 43 138 Hydrogen 
Faint line, 1 | 43 261 
Fainter line, . 0°5 | 43 396 
Line, eae 1:2 | 43 526 Hydrogen 
Strong beginning of a band of faint 4 , ) || Hydrogen+ | + Carbon 
Yellow. PN aaa at 25 E, | 43 675) 
t 43 676 
Part 3. | 
The strong line alluded to before, 2 fis. 43 678 J 
Band of just resolvable lines extends 
thus far, i : 1 tN] 44 041 
A separate thin portion, il 44 125 Hydrogen 2 
: 44 272 
ee broader streak, 1 |; 44 3 a3 Hydrogen 
eak beginning of, 1 : § | 44 495 b 
eed Sharp end of, . 2 ¥ 44 839 f | Hydrogen 
0-5 Laos -|| 
_ Citron. Very faint lines, 0'5 | | 45 092 
ens, 0°5 | 45 185 | 
‘ arp beginning, 4 te, 45 262 
Citron band Faint ending, . 1 Eee 45 757 Carbon 
F 1 | 45 884 Hydrogen 
ete Eee Pen one a o5 | | 46 075 Oxygen 
Faint band, begins, 1 46 418 
ends, 1 | | | 46 866 Oxygen ? 
Weak band, Hest sharply, . F 165 47 061 | Garb 
ends faintly, 0°5 Hs. 47 311 | arbon 
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VOL. XXX. PART I. S 
