Diagram, 'Absorption spectra of phyllocyanin and its principle compounds and derivatives' by [Henry] Edward Schunck A diagram with 15 rows showing absorption spectra for phyllocyanin, phyllocyanin cupric acetate, phyllocyanin ferrous palmitate, phyllocyanin ferrous malate and phyllocyanin zinc carbonate. A full description of the spectra is provided in the accompanying paper. Subject: Chemistry / Spectroscopy A print of this diagram was published in volume 42 of the Proceedings of the Royal Society alongside the paper 'Contributions to the chemistry of chlorophyll. No. II'. 1886