Some very incomplete and casual-in-tone notes on Monique, Zerdoun Bat-Yehouda. 2003. Les Encres Noires au Moyen Age. Paris: CNRS EDITIONS. Originally a Twitter thread. Pp 3-4: claims that previous studies have been limited to describing colour, shades and broad properties. Wants to add scientific principles that will help to date and localise specific inks. But also to find methods for restoration projects.