THE SPECTRUM OF NOVA PERSEI AND THE STRUCTURE OF ITS BANDS. 285 
not due to the hydrogen radiation of wave-length 4684. Near \,=4725°'3 is the 
hydrogen line 4723°6, which in the March-April spectrum was identified with a band 
Taste XVII.—Spectrum of Nova Perser from 1901 August 1 to 1903 January. 
Nova PERSEI. 
Planetary Nova 
I Nebule. Aurige. 
Degree of Intensit = 
of Thee of cee RaleuKe ee Entra (Campbell). (Campbell). 
Photo-Plate. Radistions, 
S ° ° 
a ° oF ° ae 
Xo 5 ee ecen ‘ $ = 9 od : = 
= Bo 5 2 IEP Se | 2. ae ee @ 
A es cee s ce Ee 25 z 34 A I IN I 
48/68/ 2:|328]22/68| 2 | 68 
Bees | Sa so ses Waa 
& | © OUMCM igs eg he ain an 
3868°7 11:0 | 7:0 | 0:4 30 24 5 3868 4,5 
3967:0 3)95) I} fs) I) (Oets) 25 18 8 3969 4,5 396 0°5 
4102°7 +0°9 31 1:3 | 0°7 0:8 7 5 4 8 4101°8} 5,6 4098 2 
4340°2 —0°5 5:2 38 | 3:0 | 0:5 ll 11 11 6 4340°7| 5,6 4336 1 
4363°7 10:1 ded |) Bs 20 20 9 4363°8| 2,4 4358 8 
4611°9 14 Let 022 |) 073 4 5 2 4 4610 0,1 460 1 
4641°3 DOM owen Ole) (Onl iil 9 5 2 
or (4634°6) 4637 | 0,2] 4630| 7 
4687°1 Bez 4:0) 12 Y 11 6 4 4687 2,5 4681 4 
4714°8 6:5 | 2°6 | 0°5 8 3 2 4715 2,4 471 1 
4725°3 5:3 6:0 | 1:2 16 6 
4862°0 +0°5 4°8 15 | 0°3 5 2 2 4861:5| v.b 4857 10 
4958°6 —04 2°6 2°70 | O°5 | 6 3 5 4959-0; v.b 4953 30 
5006°4 -—0°6 AON 335) |) 255 10 10 10 5007:0| v.b 5002 | 100 
Faint Bands, 
3813 — 3835 6 
3889 — 3952 0:2 1 3 3889 0,4 
4027 — 4045 0:8 4 4026 0,4 
4063 — 4080 06 | O1 | 0°5 1 3 Z 
4140 — 4165 0°5 0:2 2 
4220 — 4265 0°5 05 | 05 2 3 4 494 O), Il 493 1 
3 4265 (0) 426 il 
4300 — 4323 0-8 | 0O°8 | 0-2 3 2 2 
4382 — 4398 08 | O08 | 0:3 3 2 4 4390 0,4 438 1 
4405 — 4488 1:3 IL || O27 5 4 5 4472°6| 0,5 4466 1 
4503 — 4590 0:9 10 | 0:7 4 4 4 4574 0,2 451 1 
4597 0,1 
4662 1,4 
4747 — 4768 0:4 1:5 | 06 5 3 2 4744 2,4 
4776 — 4786 1:0 | 0°5 4 3 102 
4799 — 4810 0:6 3 6 
4824 — 4840 0:3 0:6 3 
4886 — 4900 0-1 | 0-5 3 4 
4917 — 4938 0-1 0% | 03 3 2 4 
5031 — 5053 0-1 Opa Ore 2 2 
| of medium intensity. As neither the wave-length nor the intensity of the maximum 
| agree with those of the hydrogen line, it probably is not due to hydrogen, though the 
