Original high-res photos including colour chart for Figure in: ‘Rusty, Suppurated, and Discharged like Sēpía Ink: Scientific Knowledge, Animal Lore, and Colour Classification in Plutarch’s De Sera Num. 26, 565b–d’

This dataset includes the original photographs used for the comparative table of cephalopod ink stains and various corroded metals' powders in the Figure to be published in: Morrone, Daniele. ‘Rusty, Suppurated, and Discharged like <i>Sēpía</i> Ink: Scientific Knowledge, Animal Lore, and Colour Classification in Plutarch’s <i>De Sera Num.</i> 26, 565b–d’. <i>Early Science and Medicine</i> 30, no. 1 (2025): 1–25. <br><br> The 7 photographs are shared in their full resolution and without digital alterations, except for the one named "Whole sheet + colour chart, DarkTable corr.JPG".

This photograph, also showing a colour chart as evidence for the stains' colours' fidelity, was edited using the software DarkTable to standardise the colours' appearence based on the included colour chart. Its corresponding original, unaltered photograph is included in the dataset as "Whole sheet + colour chart, Original.JPG". <br><br> All photographs were taken in the laboratory of the “G. Ciamician” Department of Chemistry at the University of Bologna by Daniele Morrone and Giacomo Montanari, who also conducted the required experiments.