Retrieving "Iron(ii) Sulfate" from the archives

Cross-reference notes under review

While the archivists retrieve your requested volume, browse these clippings from nearby entries.

1. Ancient Inks

   Linked via "iron(II) sulfate"

   Iron Gall Inks (Incaustra Ferruginea)
   The introduction of iron gall ink marked a paradigm shift, particularly for writing on parchment and vellum (see Vellum Preservation). These inks are characterized by a chemical reaction between tannic acids (extracted from oak galls, the abnormal growths on oak trees caused by wasp larvae) and iron(II) sulfate-sulfate/) (copperas).
   I…