1034 
PROFESSOR W. N. HARTLEY ON 
Spectrum obtained by the Intense Ignition of Manganic Oxide—(continued). 
Desci’iptioji of Specti’um. 
X. 
References. 
More refrangible edge of band, weak 
Line on edge of band 
Edge of band, very doubtful 
55 5 > 
Line, strong, not very sliarp 
Band, very weak .... 
Line, fairly strong, not very sharp . 
More refrangible edge of band, weak 
„ „ „ very weak 
,, ,, ,, donbtfnl . 
„ „ „ fairly stron: 
and sharp 
More infrangible edge of band, very weak 
stronger 
sharp 
doubtful 
distinct . 
There are some imperfect edges of band at 
intervals extending to 
Three veiy doubtful lines, or edges of bands 
More infrangible edge of band. 
Line, nebulous, fairly strong’, or edge of band 
„ „ but strong „ „ 
Nebulous line, weak. 
„ „ very weak. 
Ijine, possibly a pair, fairly strong . 
„ or edge of narrow fluting, sharp 
The above are both degraded slightly 
towards the more refrangible edge. 
Very strong band degraded towards the 
more refrangible edge. The band is more 
diffuse, stronger, and bi'oader, at the 
lower part of the flame. 
Line, possibly a close pair, strong . . . . 
19780 
19927 
20095 
2026.3 
20423 
20605 
20710 
20875 
20935 
20965 
20998 
21055 
21293 
21476 
21740 
21857 
22267 
22436 
22713 
23203 
2.3400 
23520 
23664 
24180 
24196 
24215 
24238 
24264 
24514 
24538 
24600 
24617 
24664 
24699 
24750 
24770 
24845 
25036 
25055 
5055 
5018 
4976 
4935 
4896 
4853 
4828 
4790 
4776-5 
4770 
4762 
4749-5 
4696 
4656 
4600 
4575 
4491 
4457 
4403 
4293 
4273 
4252 
4226 
4135 
4133 
4130 
4125-5 
4121 
4079 
4075 
4065 
4062 
4054-5 
4049 
4040 
4037 
4025 
3994 
.3991 
4831-8, Fe. 
4761-3, Mn, Thalex. 
)>Bands of manganic oxide. 
j 
J 
4491, Mn, Angstrom. 
Band peculiar to manganic 
f oxide. 
J 4457-6, Mu, Thai,BN. 
Band peculiar to manganic 
> oxide. 
j 4271-6, Mn, ThaliSn. 
' o 
42*27, Mn, Angstrom. 
Band peculiar to mang’anic 
)> oxide. 
4132-15, Fe, K. and R. 
4079-6, Mn, Angstrom. 
4062-9, Fe, C. 
4063, Fe, V. and T. 
4054 3, Mn, Thai.^n. 
4048-7, Mn,^C. 
4048, Mn, Angstrom. 
64040-6, Mn, C. 
J Also Angstrom. 
1 , . 
^Band of manganic oxide.* 
3991-7, Mn, Lockyer. 
* This band appeal’s as two groups of lines, in ordinary steel and spiegel-eisen, when photographed 
with short exposure. Tlie less refrangible group consists of three lines, the more refrangible of 
two lines. They are very sharp and distinct. The two groups become merged into two broad lines in 
metallic manganese. 
