258 
PROFESSOR L. BECKER ON 
TaBLE I.—continued. 
Photo-Plate No. 5, 1901 March 25. 
Angle of inclination of plate= 13°; width of slit 0°020 mm. ; Imperial plate ; exposure 3:2 hours; the 
plate is badly fogged; the spectrum was measured 5 times and referred to 35 standard lines; good 
definition. 
a vw. 
4032°9 | 0°3 
4038°2 | 0°5 
40544 | 0:8 
4062°7 | 1:0 
4082 18 
4089 1:2 
40991 | 0-4 
4106 1:3 
4113 13 
4117°3 | 0°4 
41246 | 0-2 
4129 12 
4145 1-7 
4163°5 | 0°5 
4179 1°3 
42209 | O-1 
42350 | 0:8 
Intensity. A V. 
4235°0 | 0:8 
0:5 
: 4248 11 
4279 3 
15 
42984 | 0-4 
2°5 
Fe 4313°8 | 0:5 
7 43252 * 
43269 | 0-5 
\ min, | 43365 | 0-4 
‘8 min. | 4337°3 
( 4343-5 | 1:0 
6 | 4345-9 
4353°3 | 0:3 
45 
i 4358:4 | 0°5 
; 4362-0 
4364:5 | 0°6 
3°5 
4366°5 
4377 5 
Intensity. A 
4377 
9) 
4405'5 
4:5 
4 4497°2 
4454 
3) 
6 4471°3 
7 | 4477°3 
4486°3 
8°5 
4507 
6 
4556 
9 
= 4582 
4605°7 
10 
4615°4 
9 
4660 
85 
=4] 4697°8 
8°5 
n 4724°7 
4753°8 
7 4806 
4825°5 
Vv. 
* One measurement. 
Intensity. aA v. | Intensity. 
4825°5 | 0-7 
7 6 
4839°9 | 0:2 
6 8 
4846:0 
7 0 
4848°8 | 0°5 
8 11 
4855'8 | 0°8 max. 
8°5 11 
4867°9 | 0:8 max. 
9 1l 
4874:5 | 0°8 9 
F 75] 4878 2 7 
4887 14 4 
8 2 
48989 | 1:0 
6 0:5 
491071 | 1:0 
7 2 
4932 17 
9 1:5 
4941°6 | 0-7 
| 8 0:5 
| 7 4950°6 | 0:9 
| 6°5 1 
5°5 | 4963 2 
5 0°5 
4 5037 16 
3°5 0:2 
50907 | 1:0 
3 
The sixth 
closely as may be expected from the accuracy of the measurements. 
minimum appears as such only in two bands on photo-plates Nos. 5 and 6, but each 
being measured repeatedly and independently, there can be no doubt that it really 
exists ; besides, the other five settings made at this point appear to me to suggest that 
it existed also at those places, though it was not appreciated. The second minimum is 
questionable, because both positions rest on only one measurement. 
The estimated degrees of intensity at corresponding points of the same H-band do 
not agree on the seven plates. 
a 
The observations are too few to determine the 
reductions to an average scale of the estimated degrees of intensity as a function of the 
degrees ; but since the differences of the estimates made on two plates at corresponding 
places are almost the same for all degrees, I reduce the estimates to the scale employed 
on photo-plate No. 3 by adding to the degrees on plates Nos. 1, 2, 4, 5, 6 respectively 
The result is given in Table III. 
