Fig. 2From: Poisonous books: analyses of four sixteenth and seventeenth century book bindings covered with arsenic rich green paintOptical micro-photographs. a KLR-11920/Herlufsholm 768.6; b KLR-11971/Herlufsholm 775.2; c KLR-11972/Herlufsholm 186.6; d KLR-12109/Smithsonian QH41.A43 1602. Due to the thickness of the samples, note the difference in scale bars for KLR-11920 and the rest of the samplesBack to article page