Spectrum analysis : six lectures, delivered in 1868, before the Society of Apothecaries of London / by Henry E. Roscoe ; with appendices, coloured plates, and illustrations.
Henry Enfield Roscoe's printed course of six lectures on spectrum analysis, given to the Society of Apothecaries of London and published by Macmillan in 1869 for chemists and general scientific readers. Plates show emission and absorption spectra as banded strips with numbered wavelength scales and element labels, plus apparatus diagrams: usable as ruled colour bars, dark fields with bright lines, and measured rulers.
