TY - JOUR T1 - On Variations Observed in the Spectra of Carbon Electrodes, and on the Influence of one Substance on the Spectrum of Another JF - Proceedings of the Royal Society of London (1854-1905) VL - 55 SP - 344 EP - 349 PY - 1894/01/01/ UR - http://dx.doi.org/10.1098/rspl.1894.0049 M3 - doi:10.1098/rspl.1894.0049 AU - Hartley, W. ER -