138 
ME. W. GEOFFREY DUFFIELD ON THE 
Table II.—Set B (continued). 
Atmospheres . 
3. 
4. 
10. 
15. 
20. 
25. 
40. 
50. 
70. 
8(7. 
100. 
Line. 
Wave¬ 
length. 
o 
Displacements in thousandths of an Angstrom unit. 
2 
4369-89 
17 
33 
32 
. 40 
43 
60 
60 
108 
129 
134 
3 
4352-86 
21 
— 
25 
34 
45 
35 
56 
56 
(47) 
106 
(106) 
4 
4337-14 
30 
31 
42 
62 
69 
66 
82 
73 
121 
185 
194 
(d) 
4325-19 
18 
21 
32 
56 
62 
65 
56 
125 
112 
203 
185 
1 
4315-21 
15 
24 
16 
31 
39 
37 
41 
43 
56 
108 
99 
o 
4307-96 
16 
20 
24 
56 
60 
56 
60 
112 
95 
194 
177 
3 
4299-42 
— 
— 
60 
155 
* 
207 
313 
— 
470 
474 
560 
4 
4294-26 
* 
21 
24 
47 
52 
61 
86 
H2 
116 
116 
151 
(e) 
4282-58 
* 
24 
22 
* 
29 
33 
56 
39 
— 
116 
95 
1 
4271-93 
14 
23 
21 
45 
64 
65 
69 
129 
147 
203 
203 
3 
4260-64 
27 
34 
64 
95 
124 
90 
177 
263 
320 
293 
732 
4 
4250-93 
* 
18 
22 
46 
58 
56 
82 
116 
129 
177 
190 
/1 
4236-09 
31 
-T* 
64 
95 
129 
223 
405 
444 
(776) 
552 
776 
2 
4233-76 
99 
92 
193 
172 
297 
203 
370 
409 
465 
483 
668 
3 
4227-60 
113 
90 
145 
155 
326 
246 
431 
— 
— 
= - 
— 
4 
4222-32 
86 
71 
140 
177 
265 
196 
358 
— 
543 
517 
— 
(g) 
4219-47 
24 
25 
24 
39 
75 
40 
78 
78 
155 
142 
181 
l 
(4210-48)1 
60 
— 
107 
129 
142 
142 
157 
181 
362 
259 
474 
2 
4204-07 
21 
— 
22 
30 
— 
43 
60 
61 
134 
121 
190 
3 
420215 
21 
* 
21 
47 
49 
60 
78 
116 
116 
190 
228 
4 
4199-19 
* 
24 
37 
47 
67 
65 
100 
104 
121 
181 
5 
4198-42 
—■ 
— 
— 
(147) 
■— 
— 
— 
— 
— 
— 
— 
6 
4196-31] 
(174 
210 
293 
260) 
— 
— 
— 
— 
— 
— 
— 
7 
4195-46] 
(138 
187 
284 
250) 
— 
— 
-— 
— 
— 
— 
— 
(h) 
4191-57 
— 
— 
188 
190 
271 
183 
310 
— 
443 
452 
539 
1 
4187-92 
122 
— 
— 
177 
— 
228 
431 
— 
— 
— 
— 
2 
4187-17 
106 
— 
— 
177 
321 
(168) 
(190) 
— 
— 
— 
— 
2a 
4184-99 
— 
— 
24 
— 
— 
— 
47 
94 
— 
— 
172 
3 
4181-85 
20 
— 
25 
40 
43 
60 
— 
— 
95 
138 
181 
4 
4175-71 
24 
— 
21 
49 
60 
52 
65 
47 
108 
142 
172 
(i) 
4156-88 
27 
— 
21 
43 
56 
62 
65 
(39) 
99 
134 
151 
1 
4154-57 
24 
— 
22 
46 
54 
57 
86 
(36) 
112 
129 
172 
2 
4143-96 
14 
* 
26 
56 
60 
70 
99 
138 
155 
181 
177 
3 
4143-50 
18 
— 
* 
30 
48 
— 
— 
— 
— 
— 
—- 
4 
4134-77 
28 
— 
21 
53 
(142) 
57 
86 
78 
116 
138 
164 
(/) 
4132-15 
12 
* 
26 
47 
68 
59 
108 
134 
129 
172 
177 
1 
4127-68 
16 
— 
41 
47 
— 
56 
82 
73 
125 
125 
164 
0 
—J 
4118-62 
26 
— 
21 
41 
71 
59 
99 
86 
] 42 
125 
177 
3 
4071-79 
20 
* 
* 
59 
60 
69 
86 
129 
147 
181 
198 
4 
4063-63 
21 
* 
* 
53 
56 
73 
82 
129 
151 
185 
194 
Id 
4045■90 
21 
* 
* 
69 
65 
73 
82 
138 
168 
* 
* 
Asterisks and black figures indicate reversals. Italic figures indicate faint reversals. 
[t Note added December, 1907.—From a private communication from Professor Kayser I understand 
that the lines 1, X = 4531 • 25, and g 1, A = 4210-48, are the only ones in the above table that are 
doubtfully due to iron, being possibly produced by Co and Sa respectively. These lines alone fail to fall 
into any of the groups of lines into which the iron spectrum is divisible. There is thus additional evidence 
that they may be due to impurities. They have not been included in the diagrams.] 
] See p. 157. 
