ON THE MEASUREMENTS OF WAVE-LENGTHS. 
99 
The Spectrum of Cadmium (continued). 
Scale- 
numbers. 
Description of lines. 
Wave¬ 
lengths. 
Remarks. 
137-34 
Strong, very sliort. 
3129-4 
138-05 
f Weak, very short. 
3123-6 
138-47 
Weak, very short. 
3120-9 
138-92 
__ Fairly strong, very short. 
3117-8 
139-80 
Weak, very short. 
31120 
142-38 
'Strong, very short. 
3095-0 
143-05 
J 
Faint, very short. 
3090-5 
143-48 
1 
Faint, very short. 
3087-7 
144-10 
Strong, very short. 
3084-3 
144-60 
Weak, continuous, fine. 
3080-2 
This line appears strongest in the 
145-24 
J 
’ Weak, very short. 
3076-7 
centre. 
145-78 
Faint, very short. 
3073-2 
146-61 
"Fairly strong, very short. 
3067-8 
147-21 
Strong, very short. 
3064-0 
148-13 
Fairly strong, very short. 
3058-4 
Coincident with an air line. 
149-10 
Fairly strong, very short. 
3052-3 
149-75 
^Fairly strong, very short. 
3048-2 
151-88 
Faint, very short. 
30349 
153-68 
Faint, very short. 
3023-8 
154-93 
’ Weak, very short. 
3016-1 
155-48 
Faint, very short. 
3013-8 
157-18 
Faint, very sliort. 
30025 
158-47 
Weak, very sliort. 
2994-8 
159-93 
Weak, very sliort. 
2986-1 
161-05 
Strong, continuous, extended . . . 
2979-9 
162-70 
Weak, very short. 
2970-2 
163-95 
Faint, very short. 
2964-5 
165-96 
r Faint, very short. 
2951-4 
166-75 
Fairly strong , short. 
2947-1 
173-50 
Weak, very short. 
2909-9 
179-07 
Strong, continuous, extended . . . 
2880-1 
181-37 
Weak, continuous, fine. 
2868-0 
In some photographs this line 
187-65 
Fairly strong, continuous. 
2836-1 
appears strongest in its cen- 
188-22 
Faint, short. 
2833-0 
tral portion, more especially 
when the spark is strong and 
the electrodes near together. 
Though continuous it does 
not extend from pole to pole. 
188-30 
Faint, fine, continuous. 
2832-3 
Strongest in its central portion. 
193-37 
Faint, very short. 
2807-3 
194-01 
Weak, very short. 
2804-0 
199-10 
Faint, very short. 
2779-8 
200-18 
Faint, continuous, fine. 
2774-5 
Strongest in its central portion. 
202-04 
Weak, very short. 
2766-5 
202-58 
Weak, fine, continuous. 
2763T 
Strongest in its central portion. 
205-87 
Vert strong, continuous, broad, with 
a nimbus, and greatly extended . 
2747-7 
210-72 
Weak, very short. 
2726-9 
215-34 
Faint, very short, fine. 
2706-0 
222-05 
Weak, continuous, fine.. 
2677-2 
226-49 
Very faint and short .. 
2658-5 
Strongest in its central portion. 
228-67 
Very faint and short. 
2649-4 
229-62 
Very faint and short. 
2645-4 
231-05 
Very faint and short. 
2639-5 
231-12 
Weak, continuous, fine. 
2639-7 
