960 
EEV. T. E. EOBINSON ON SPECTEA OE ELECTEIC LI&HT, 
The spectrum O, E., has very little light, and much of it is a mere shadow. In H, 
C.P., the lines are visible only near the negative electrode, except the Above they 
are lost in a grey haze. Exhausting, the *s and haze vanish, and the other lines stand 
out conspicuous. In H, E., sometimes the tube was fiUed -with conical strata and the 
lines were faint ; at other times it was filled with a uniform flash, and they were bright. 
In CO, C.P., the sets 17—24 seem to replace the multitude of close narrow lines that fill 
the green in this gas in most of its spectra ; they are as wide as the slit. The two of 
CO, the C.P. of air and H, and the E. of O were observed with Merz, the others 
with Duboscq. 
Table IX. — Lead. 
Air. 
Nitrogen. 
Oxygen. 
Hydrogen. 
Carb. oxide. 
C.P. 
E. 
C.P. 
E. 
C.P. 
E. 
C.P. 
E. 
C.P. 
E. 
1. 
O 
32 
36-5 b. 
2. 
a 
38‘5 b. 
37-8 of. 
39 * 

}8'3 
39 #0. 
37-5* 
3. 
H' 
48 f. 
491 vf. 
48 vf. 
48-8* 
47-5 b. 
4. 
49-5 b. 
49 fo. 
5. 
51 b. 
51 f. 
50-8 vf. 
51-4 f. 
51 f. 
51-5 f. 
52 b. 
6. 
y 
55 * 
55 * 
54 ]f. 
54-5 J vn. 
7. 
57 c. 
57-8 vf. 
57-7 c. 
56 vbn. 
56 ] 
f. 
8. 
32 
58-5 fn. 
59 f. 
60] f. 
59'5 n. 
59-5 vf. 
0 
f. 
9. 
33 
0-0 vf. 
l|f. 
... 
10. 
2 no. 
2-5 nf. 
2-3 nf. 
2-5 bw^. 
... 
... 
11. 
s 
4 * 
3 fn. 
3-5* 
3-3 f. 
3-5 n. 
3-5; 
f. 
12. 
7 * 
6-5 b. 
6-5 nb. 
6-8 nb. 
6-8 b. 
6-5 * 
6 b. 
5-5 ] 
f. 
7 * 
13. 
i 
8-5 b. 
9 vb. 
8-5 vf. 
8-7* 
ten or 
twelve 
14. 
t' 
10-5 nb. 
10] b. 
here. 
15. 
t" 
12 /b. 
12 b. 
12-8 nb. 
11 -7 f. 
11 c. 
11 nb. 
16. 
K 
16 * 
17-5bw3, 
16 f. 
16*8 b. 
14-8 w. 
16 * 
17-’5 ; 
f. 
16-5 bw®. 
17. 
20 f. 
20 f. 
19-8 nf. 
19-7 f. 
19-5 n. 
20-5 
Ic. 
21 f. 
18. 
22-8 nb. 
22-7 f. 
22-5 
u. 
19. 
9) 
24 * 
24 * 
24 * 
24 ] * 
24-8 bn. 
23-8 b. 
24 * 
24-5 n* 
24-5 * 
intense. 
intense. 
20. 
25 J f. 
25-4 f. 
25-5* 
21. 
27-5 f. 
28 f. 
28-1 f. 
22. 
30'5 vbn. 
29-8 nf. 
30-1 fn. 
29-5 f. 
30-5 b. 
30-5 f. 
23. 
31 b. 
31-8* 
32 f. 
24. 
6 
33 * 
33 
32-5 vf. 
338 
33-8 nc. 
32-5 nb. 
34 vf. 
25. 
36 f. 
36-5 fw. 
36 8 b. 
36- 1 
35 f. 
35-6 ] 
b. 
36-5 vf. 
27. 
37-5 f. 
38-8 vn. 
37-8 nf. 
37-8 J 
b. 
28. 
41 f. 
40 n. 
40'5 bw^. 
40-8 bw. 
40 f. 
40-5 bw^. 
40 vf. 
29. 
43 b. 
43-5* 
43-8 c. 
42 *w®. 
42-5 
43 * 
intense. 
30. 
45 * 
45 1 nc. 
31. 
46 f nc. 
46 bn. 
46 f. 
32, 
48-5 
48-3 bn. 
48-5 vn. 
33. 
51 f. 
50 
50-8 » 
51-5 f. 
50-5 b. 
34. 
i 
52 b. 
52 
52-3 vn. 
52-8 f. 
52-5 nc. 
52-5 fw®. 
35. 
54 f. 
54 
54-3* 
54-5 * 
36. 
kk' 
56 * 
55 ’5 * 
56-5 f. 
double 
56 =( 
e 
37. 
33k" 
58 * 
58 vb. 
58-8* 
59-5 f. 
58-5* 
38. 
34 
1-5] 
nc. 
0 b. 
0-3 c. 
0 fw. 
39. 
X 
4 w. 
4 
fnc. 
3-6 c. 
40. 
5 b. 
5-5 
nc. 
4-8 fn. 
5 b. 
41. 
6-5 \ b. 
6-8 c. 
6-5 f.n 
7-5 ] vnb. 
6-5* 
42. 
9-5 j n. 
8-8 n. 
9-5 J vnb. 
43. 
10-51 
* 
10-8f. 
44. 
11 ‘5 bn. 
12 
U 
ll-8b. 
12-5* 
45. 
14 f. 
14 f. 
14-5 f. 
14 nf. 
145 
nc. 
46. 
17 * 
17 f. 
16 f. 
16 n. 
15-8 n. 
15-8' fw. 
16 * 
15-5 nf. 
17 
ID 
^nc. 
4/. 
19-5 f. 
18 b. 
19-3 b. 
1 7-3 n. 
48. 
V 
20 nb. 
20-5 n. 
20-9 *wt. 
21-5 
50. 
22-5 f. 
22-5 f. 
21-8 n. 
51. 
26 vf. 
27 c. 
24-8 bw2. 
26-5 f. 
26-5 vf. 
52. 
? 
30 bw. 
29 * 
29-5* 
53. 
32 c. 
32-8 nb. 
31-8 nf. 
33-5 vf. 
54. 
0 
35 fw. 
35 b. 
34 c. 
36-8 nb. 
35-7 vf. 
36-5 vf. 
55. 
40 n. 
40 vf. 
39-3 vn. 
— 
42 vf. 
56. 
45 vf. 
— 
46-5 vf. 
57. 
50 vf. 
51 f. 
48-8 n. 
