IV. Flame spectra at high temperatures. Part II. The spectrum of metallic manganese, of alloys of manganese, and of compounds containing that element

The spectrum of manganese has been the subject of much investigation; the spark spectrum was examined by Huggins, Thalén, and Lecoq de Boisbaudran ; the arc spectrum was studied by Ångstrom, Thalén, Cornu, Lockyer, also Liveing and Dewar; the flame spectra obtained from compounds of manganese were investigated by Simmler, Von Lichtenfels, Lecoq de Boisbaudran, and Lockyer, while Marshall Watts has given us accurate measurements of the wave-lengths of lines and bands observed in the spark and oxybydrogen flame-spectra of spiegel-eisen, manganese dioxide, and other compounds of this metal.