96 
PROFESSOR W. N. HARTLEY AND MR. W. E. ADENEY 
The Spectrum of Zinc. 
Scale- 
numbers. 
Description of lines. 
Wave¬ 
lengths. ■ 
Remarks. 
5-72 
Faint, shoz’t, fine. 
4725 0 
The lines of zinc are much extended. 
772 
Faint, sliort, fine. 
46800 
61-35 
Very faint, short. 
38135 
61-53 
Very faint, short. 
3811-5 
66-12 
Faint, very short. 
3757-5 
69-34 
Weak, very short. 
3720-5 
69-98 
Weak, very short. 
3713-5 
70-79 
Weak, very short. 
3704-5 
71-75 
Weak, very short. 
3694-0 
72-75 
Weak, very short. 
36830 
74-13 
Weak, very short. 
3668-0 
76-01 
Faint, very short. 
3645-4 
77-49 
Weak, very short. 
3632-2 
78-25 
Weak, very short. 
3623-4 
82-57 
Faint, very short. . 
3578-2 
84-35 
Faint, very short. 
3560-8 
86-84 
Very faint and short. 
3536-8 
87-56 
Faint, very short. 
3529-8 
89-73 
Very faint and short. 
3569-2 
91-61 
Faint, very short. 
3491-8 
108-49 
f"V ert strong, continuous, broad, with 
nimbus, extended. 
3344-4 
113-75 
Vert strong, continuous, broad, with 
nimbus, extended •. 
3301-7 
116-30 
Strong, continuous, with nimbus, 
l extended. 
3281-7 
119-53 
Faint, very short. 
3255-8 
121-77 
J 
Faint, very short. 
3238-7 
122-30 
[ Faint, very short. 
3234-6 
145-69 
' Strong, continuous, fine, sharp, 
< 
extended . 
3075-6 
146-22 
Strong, discontinuous, fine, extended . 
3071-7 
152-03 
Strong, discontinuous, slightly ex- 
tended . 
3035-4 
153-89 
Faint, short.. 
3024-1 
Coincident with an air line. 
154-85 
Weak, discontinuous, fine, sharp 
3017-5 
158-21 
Faint, very short. 
2996-7 
164-86 
Faint, very short. 
2959-5 
Coincident with an air line. 
177-86 
Faint, very short. 
2886-4 
183-60 
Faint, very short. 
2856-3 
194-98 
f Strong, continuous, fine, with a nimbus 
2800-1 
198-54 
Very faint, short. 
2782-5 
199-30 
H 
Faint, short. 
2778-4 
201-23 
Strong, continuous, with a nimbus 
2770-2 
204-37 
_.Fairly stronq, discontinuous .... 
2754-5 
212-17 
Faint, short. 
2719-7 
213-97 
Faint, long. 
2711-5 
220-45 
Faint, long. 
2683-8 
226 "64 
Faint, short. 
2657-0 
238-96 
Weak, discontinuous, fine. 
2607-6 
242-97 
< 
Very faint and short. 
2592-3 
243-75 
Very faint and short. 
2589-3 
244-84 
Very faint and short. 
2585-1 
245-81 
Weak, discontinuous, fine. 
2581-4 
247-58 
Weak, short ........ 
2574-8 
249-01 
Weak, short. 
2569-4 
252-31 
Vert strong, continuous, broad, with 
a nimbus much extended .... 
2557-3 
