FLAME SPECTRA AT HIGH TEMPKRATURES. 
I 037 
Manganic Oxide. 
The following measurements appear to belong to bands peculiar to the manganic 
oxide spectrum ; that it to say, on comparing the photographs of the spectra of 
metallic manganese and manganic oxide, they appear to consist of the same groups of 
lines and bands with the addition of these which at once strike the eye when the 
whole spectrum is viewed. Hence we may conclude that the spectrum obtained by 
intense ignition of manganic oxide consists of the bands and lines rlue to the element 
manganese, with the addition of those bands which are due to the oxide of manganese. 
Ivory scale 
measurements. 
Description of Spectrum. 
/ 66-5 
Band . . . 
1 70-3 
/ 70-3 
Band. 
r 7 o'5. 
1 
Band 
! 82-0^ 
Band, -weak and not well defined 
! 82-71 
b 86-3 
r 86-3 
Band. 
\ 97-5 
/ 97-5 
Band. 
\ 109-0 
A shai'p line on this edge. 
There is a continuous band of rays extending to 
/ 148-3 
Band, weak, ajid with edges not 
[ 1.34 0 
well defined 
/ 160 
A very feeble narrow band. 
1 161 
/ 119 
Narrow band. 
I 119-5 
/ 161 
Band degi’aded toward.s tlie less 
\ 167 
refi-angible edge 
1 
— . 
A. 
X 
21155 
4727 1 
1 
21430 
4667 j 
> 
21430 
466/ 
21855 
4575 j 
> 
21855 
4675" 
22360 
4472 
Band w'ith 
> -w^ell-defined 
22415 
4461 
edges. 
22694 
4406 
22694 
44061 
1 
23490 
4257 
f 
23490 
42571 
1 
24274 
4120 
.3424 
26652 
3752 
1 
26930 
3713 
f 
27250 
3670 1 
1 
27304 
3662 
f 
24917 
40131 
1 
24950 
4008 J 
r 
27304 
3662 1 
1 
27615 
3621 J 
r 
There are also the following narrow bands, or flutings, to be noted, not observable 
wdthout a mag’nilier. 
o 
Ivory scale 
measuiements. 
Description of Spectrum. 
1 
rii5-5 
Sharp edge of narrow fluting. 
24699 
4049" 
116-3 
24732 
4043 
< 
Both are degraded towards their more re- 
> 
frangible edges 
r 151-0 
Fine sharp lines, apparently the edges of 
26783 
3734 
[ 153-3 
flutings 
26903 
3717 J 
A broad diffuse band, which is to be seen on the Bessemer flame spectrum between 
M and N of the solar spectrum, belongs apparently to manganic oxide. There is one. 
