262 PROFESSOR L. BECKER ON 
a faint band. ‘The difference cannot be due to a change in sensitiveness of the photo- 
graphic film, as its effect is inappreciable within the extent of a band. On the other 
hand, it will be proved from the later plates that these bands must be similar also in” 
intensity, and therefore other radiations must be superposed on the hydrogen 
radiations at the ends of the bands. 
TABLE IV. TApun Vie 
Mean of the Results from three Plates, Nos. 3, 4, and 5, 
showing the Similarity of Structure of the three H-bands Mean Structure of 
and the more rapid Falling-off in Intensity of the H8-band. Bands. eS a ‘ 
(=) 
eat as : ee || 
a a os. 0 
ec Hs Hy He 522) Plates, | 
on No. ay Inty, aoe iq 
oa ay Inty. Ms Int. age ie laity 
Ag 
] -—73 0) 
3 255 2 
4 7 5 5 
1 — 43 —44 3 —43 
5 7 5 6 
2; =o =3y) — 33 -4 — 315 
5 8 1 7 
3 -- 23 = 4 = 24 5 — 239 
0 0 ; 0 0 6 | 3,4 
dies —21 =) =) 65a — eles 
7 9 9 8 
5 = i 7 —17°5 
9 neko 9 
6 8 —16 —16 | — 16°6 
; ~14 5 D 3 2 |5 
if 8 —14 = is — 14-4 
10 11 11 
8 —12 = 12) e —ll 18 10 — 12:0 is 
: \ Faas Reaeo dl eal igs a po area Ga 7 | 2,3,4,5,6 
10 ey =e 2 ye e3 8 i / 
10 12 13 13 
11 A sem 130 epee 
4 1 | min. 9 8 7 5 | 3,4,5,6 
WP |} + 4 + 3 14 + 3% 
10 13 13 12°5 
13 | + 8 15 + 6:8 
t se Peel 7 7 6 | 1,30me 
14 +10 16 + 95 
| 15 tau Be “aq. lead eee 
{ } +13 min f } +12 = 9 Z 7 3 3,4,5 
16 +14 18 + 13:0 
10 12 12 11°5 
Wi se I197 9 +18 lis +16 | i0 19 +16°8 10 
18 #3y)| . +20 ca +2) 2 20 | +201 8 
ee |e be | 7 2b ereo'l Sse 7 
20 +31 + 30 + 33 or 22a eet 
6 9°5 5 3°5 
; a : 23 +34 OB 
a |" 4.36 380 neae ual acesyane im” 
6 9 5 1 
25 + 40°5 
0°5 
26 +56 | 
* The Fraunhofer lines occur only on Plates Nos. 3 and 4, March 18 to 20 and March 25. 
