| GASEOUS SPECTRA IN VACUUM TUBES. 133 
NITROGEN. EnNpD-on TuBE—continued. 
| : Unclaimed 
| Colour. | Subject of Observation. Intensity. AEpes: W.N. Place. Impurities. ee features let 
; or Nitrogen. 
(oe ee 
Part 3—continued. 
ie ( | 2 
Hazy band line in haze, ; 3 3 HEE i re Fae 2 cB eae 
| eee Ce - 42 719 42 719 
(reading altered from 42 746). 42 946 42 946 
Yellow. Do. do. ‘ é ; 3 ie oe re oa 
43 364 43 364 
Do. do. : : 5 3 43 582 y 43 582 
Yellow line in haze, j ; : 3 HE 43 673 Hydrogen 
Part 3. Apes fee 
Yellow line in haze, i 43 687 
43 783 43 783 
— Haze band, 44 009 44 009 
Faint haze band, . : : - 2 rn = a a 
Broad line, . : 2 : c 3 a ee Hydrogen 
Region of broad dark faint bands hots Nid meee 44 500 ; 44 500 
Citron. generally, . : ; . BEE 45 224 45 224 
First of several bright haze bands 4 HE 45 241 Carbon and 45 241 
in haze, ; : HEE 45 496 Nitrogen 45 496 
Bright haze band in haze, 4 - a re ae 
= 45 995 45 995 
Bio ae 4 5 46 230 } 46 230 
Haze band in haze, 3 46 379 46 379 
Narrow band in haze, 4 46 547 46 547 
Do. do. 4 46 733 Oxygen ? 
Do. do. 4 46 867 46 867 
i : 46 993 46 993 
—————— Band in haze, 4 47 210 : 47 210 
Faint bands, and then comes a : 
at) a j 7 35333 47 488 Nitrogen 47 488 
ee eee pean still in 4 a) 47 716 || and Oxygen 47 716 
: t 47 800 47 800 
Narrow band in haze, . ; . 3 47 920 47 920 
: . 48 120 48 120 
Band in haze, 5 : 5 : 3 48 316 | 48 316 
Congeries of faint lines in haze, _ . 2 fe ae ’ \ Bas 
Grand Green band begins sharp, ~. 5 aoe 48 822 Carbon 
It is composed thus, viz.— and 
Green. Strong hazy band, . : c 5 HE - es Ninrogen , i a5 
ick 48 967 48 967 
Less strong, : : c ; 3 HE | 49 062 \ } 49 062 
: 49 142 10 49 142 
Very faint, ; : é ; 1 : 49 249 se 49 249 
Decreasing nebulous haze; no Green 0°7 to 49 270 49 270 
Giant of Blow-pipe appears, One 50 070 50 070 
Blow-pipe’s Green Giant’s place by “, 5 
( a separate Alcohol tube is . 7 Ee. | 17 2) 
Part 4. 
A fainter Green band ents, 3 50 068 50 068 
Glaucous band, . ; : 3 50 962 50 962 
Glaucous. Second glaucous band, .- 2 51 577 51 577 
Glaucous Hydrogen, . i 5 | to | 52 209 Hydrogen 
