270 
ME. J. NORMAN LOCIvYER ON SPECTRTJM-ANALYSIS 
Plate XII. Strip IV.— MANGANESE. 
Wave-length. 
Length. 
Whether re- 
versed in the 
Solar Spec- 
trum. 
Whether in 
the Spark - 
Spectrum of 
the Chloride. 
6020-7 
4 
Reversed. 
6015-6 
4 
55 
6012-5 
4 
99 
5515-6 
4 
99 
5443-0 
3 
Not reversed. 
5419-5 
4 
Reversed. 
5412-4 
4 
55 
5406-5 
4 
55 
5399-6 
4 
55 
5393-5 
4 
55 
5376-6 
4 
55 
5359-0 
Not reversed. 
5340-2 
4 
Reversed. 
5254-1 
4 
55 
5233-6 
4 
55 
5195-2 
4 
55 
4822-8 
4 
99 
4782-6 
4 
55 
4765-8 
4 1 
4764-7 
4 J 
55 
4761-5 
4 1 
4760-7 
4 
55 
4753-4 
4 
99 
Not reversed. 
'■d 
4738-0 
1 
CD 
> 
4729-0 
3 
Reversed. 
! 
O 
rO 
4726-0 
9 
Not reversed. 
4708-7 
4 
Reversed. 
4503-5 
3 
4501-2 
3 
4498-2 
3 ^ 
4495-2 
3 
4491-0 
3 
4489-5 
3 
4478-9 
2 
4472-4 
2 
4470-5 
2 
4464-0 
2 
4461-5 
1 3 
> 
55 
4461-0 
J 
4459-8 
3 
4457-7 
1 
4457-3 
r 3 
4457-0 
J 
4456-2 
4455-5 
3 
4455-2 
4452-0 
9 
Not reversed. 
Remarks. 
( This line has the appearance of being winged more 
on the less refrangible side than on the other. It falls 
in a place where there is much glare ; and it is pro- 
bable that a greater dispersive power than was used 
| would break up the supposed wing into lines. It 
I has been accidentally shown as reversed on the Map. 
Not seen ; could not he found. 
Drawn as one line on map, hut seen as two. 
Drawn as one line on map, but seen as two. 
This line is much shorter than its companions. 
O 
In Angstrom’s solar spectrum there is a line at 
4729-0, hut the manganese line beneath is shifted 
slightly to the left, its position being 4728-9. This 
is evidently an engraver’s error. This line and 
4726-0 are represented as one line. 
y 
All these lines appear in close masses, and it has 
not been possible to represent them on the scale of 
the map. 0 There are also several discrepancies here 
between Angstrom and Thalen. 
This line is not reversed in the sun, hut, owing 
to the closeness of the lines and complication of 
the spectrum, it was not possible to observe its length. 
There are 9 lines falling between 4459-8 and 4450-4, 
and with the dispersion used these lines appear as a 
mass. The lengths given in the Map, however, repre- 
sent the contour of the top of the mass, and the line 
has been brought up to this. 
