FLAME SPECTRA AT HIGH TEMPERATURES. 
1033 
The Spectrum Obtained by the Intense Ignition of Manganic Oxide. 
The pure oxide was preprired from a solution of potassium permanganate bj the 
action of alcohol and a small quantity of sulphurous acid. The precipitate being 
washed and ignited was heated on a support of kyanite in the flame of the oxy- 
hydrogen blow-pipe. Exposure one hour and twenty minutes. A similar spectrum 
is obtained by deflagrating a mixture of finely-powdered potassium permanganate 
and lamp-black. For comparison iron lines are indicated as follows :—F. and T., 
Fievez and Thalen ; V. and T., Vogel and Thalen ; C., Cornu ; L. de B., Lecocq 
DE Boisbaudran ; K. and R., Kayser and Runge. 
Description of Spectrum. 
1 
\ ' 
X. 
References. 
Less refrangible edge of band, or a Aveak 
nebulous line 
1 ■■ 
More refrangible edge of weak band . 
J 
Less refrangible edge of narrow band 
17028 
5873 
More refrangible edge of band. 
17076 
5856 
5858, L. DE B. 
A band appears to eommence here .... 
17160 
5827 
5855-2, Fe, F. and T. 
More refrangible edge of weak band . 
17240 
5800 
5807, L. DE B. 
„ „ sti'onger band . 
17385 
5752 
5800, Fe, F. and T. 
5759, L. DE B. 
51 55 • • 
17490 
5717 
5719, L. DE B. 
55 55 55 • ♦ 
17603 
5681 
5683, L. DE B. 
Edge of band very indistinct. 
17705 
5645 
5644, Watts. 
„ „ like a line. 
17787 
5622 
.5623-5, F. and T. 
Less refrangible edge of band. 
17835 
5607 
5607, Watts. 
More ,, ,, ,, . 
17885 
5591 
5591, Fe, F. and T. 
More refrangible edge of last band of this 
17902 
5586 
5587, L. DE B. 
series 
Less refrangible edge of weak band . 
17937 
5575 
5571-3, Fe, F. and T. 
Edge of band, doubtful. 
5474 
5473, L. DE B. 
Nebulous line near edge of band .... 
18370 
5443-5 
5473-6, Fe, F. and T. 
5443-1, Mn, Thalen. 
„ „ but sharper. 
18388 
5438 
More refrangible edge of band. 
18409 
5432 
5433, Watts. 
5 5 5 5 5 5 . 
18425 
5427 
.5432, Huggins. 
.5427, L. DE B. 
Line on edge of band, strong. 
18500 
5405 
5406-6, Thalen. 
Edge of band. 
18518 
5400 
5398, L. DE B. 
„ „ and of this series. 
18627 
5368-5 
5399-9, Mn, Thalen. 
.5367, L. DE B. 
Less refrangible edge of band, very feeble . 
.18702 
5347 
5348, Mn, Huggins. 
More „ „ „ „ 
18800 
5318 
5316, Fe, F. and T. 
„ „ „ „ weak. Nearly 
18970 
.5271 
5269-5, Fe, F. and T. 
coincident with the Solar line E 
£ 
More refrangible, stronger edge of band. 
19105 
5234 
5270-43, Fe, K. and R. 
5269-65, Fe, K. and R. 
5233-8, Thalen. 
edges sharp of this and the next two 
5232-1, Fe, F. and T. 
bands. Degraded towards the red 
Tlie same, stronger. 
19241 
5197 
5198-2, Fe, F. and T. 
„ weaker. 
19367 
5163 
6 Q 
MDCCCXCIV.—a. 
