Diagrams, experimental results by William De Wiveleslie Abney and G S Edwards Five pages of spectrographic peaks relating to Abney and Edwards' investigations into the effect of the spectrum on the haloid salts of silver. Subject: Chemistry Prints of these diagrams were published in volume 47 of the Proceedings of the Royal Society alongside the paper 'On the effect of the spectrum on the haloid salts of silver'. 1889