138 PROFESSOR PIAZZI SMYTH ON 
OLEFIANT GAS—continued. 
Left unclaimed 
: ; Vn .. | Appear- er Constituent 
Colour. | Subject of Observation. Intensity. a W.N. Place. Impurities. iiaacinted, Onion an 
| =a =a | 
Part 3—continued, 
Citron. ‘ : Carbo- Carbo- 
2 goon After more haze, another line, 1:0 1 46 495 Hy atop mn? Hydrogen 
Sharp concluding edge of a band, 15 € 46 901 
—__——_ 2 AE i 143 Carbon ? 
: 15 ie 47 427 
Hazy lines, 1:0 a | 47 651 Oxygen? 
07 i 47 914 Hydrogen ? 
Narrow band ends sharpl 2 ae A20 
a py, Hi 48 298 
Dark space follows. | 
Green, Sharp beginning of Green Band, 5 EES. 48 844 | Carbon 
Green Giant of Carbo- -Hydrogen 7 r 49 178 Carbo- Carbo- 
and Blow-Pipe, . Hydrogen Hydrogen 
Decreasing fine of the band follows, 7s |e on 
Carbo- - 
Second line of Carbo-hydrogen, 4 | 49 548 | ards fed Hydr op en 
Decreasing haze follows, ; 05 Fe 
Bundle of haze, resolvable, begins, 1:0 49 874 
maximum, 2:0 HE 50 179 Hydrogen ? 
ends, 4 0°5 50 454 
Narrow haze band, ; ; : a # } 2 ae Carbon 
1°5 50 996 
——_——_ Band, . : - . p : 15 bs 51 304 
’ és 2 51 457 
Possible double ling, .  . z ie Bee 
Glaucous Hydrogen, 3 ; 4 | 52 263 || Hydrogen 
Part 4. b2 282 
Glaucous, Glaucous Hydrogen, 4 | 52 262 Hydrogen 
Blue band begins sharp 3 52 544 1 
ends weak, — 0-5 Ht. 53 056 OE 
Very thin faint line, . 0°5 : 53 258 
(Probable blue band line of Carbo- Las | 53 660 Carbo- Carbo- | 
Hydrogen) Line, Hydrogen Hydrogen | 
ae Carbo- Carbo- | 
Narrow band, . : : 1:0 8: 53 891 Hydrogen Hydrogen | 
Begins, . 0°5 54 129 
Broad haze band ; Maximum, 1°2 HE 54 258 Carbon 
Ends, 0°5 54 468 
Sharp line, 2°0 | 54 790 Hydrogen 
Blue. Band begins, very sharply, I SS ts, 55 391 Hydrogen 
lat ends faintly, . ; 03 Hit. 55 607 
Grand violet band begins, 25 as 56 266 “ide 
ends, | 0:3 ik, 56 776 Carbon 
Indigo. Faint haze band, . : 05 st 57 137 
Faint haze band, 0°5 57 512 
———_—_— Second violet band, begins 2 57 807 { 
ends, 0° ef 58 259 Canon 
Violet Hydrogen, . 15 1 58 539 Hydrogen 
Violet. | Part 5. aR oe8 
Violet Hydrogen, . 15 l 58 542 
A band pepe with a ‘sharp line, 1°8 58 911 ||) Carbo- Carbon Carbo- 
——_—_—_ 0-4 | fF 59 117 ‘|| § Hydrogen : Hydrogen 
ie C Gioad haze extending from 04 61 207 
Lavender, Black’ space follows. 
Gray band begins sharply U5 61 567 | 
ends weakly, : OD | ) i 62 213 Carbon 
End of all haze light, 0-1 | 62 972 
End of Spectrum. 
In this spectrum there is merely a trace of impurities absolute of Nitrogen and Oxygen. The Constituents Carbon and 
Hydrogen are marked, but not extravagantly ; partly perhaps because they also appear together as Carbo-hydrogen lines rather 
signally. No Marsh-gas series appears here ; but Marsh-gas had not the Carbo-hydrogen lines by any means so strongly. 
