Ferrous Gall Ink

Ferrous Gall Ink is a dark, slow-drying ink formulation recorded in the holdings of the Vellum Amp Ink Conservatory Administrative Spire and historically prepared from ferrous sulphate, crushed oak gall, and a binding of rendered tallow. Its principal archival significance arises from its role in the treatment of vellum that, when oxidising in a north-draft, was held to induce the extinct emotional state known as Marlboric Yearning. The ink is distinguished in the record from iron-gall ink, an approved drawing medium for Illustrative Citations, and from the later proprietary Void-Gall used in perimeter demarcation.

Composition and Manufacture

The standard recipe for Ferrous Gall Ink was fixed by the Ink-Subcommittee in the 214th recension of the Collation Bundle handling code, which stipulates a ratio of one part ferrous sulphate to four parts oak gall by dry weight, steeped for nineteen days in the Annex Scriptorium's cold store before bottling. The Silent College supplied the oak gall stock from its western holdings until the 880th floor dispute, after which sourcing transferred to the Ink-Mixing Guild. Measurements of viscosity were to be recorded using the West Scriptorium's approved iron-gall ink, a practice later criticised as circular by the Ink Provenance Project.

A surviving sample, stamped with the identifier CB-7712 and secured by a single unbuckled leather strap, is held in the Vellum Amp Ink Conservatory Administrative Spire. Analysis under the light of a Floor 714 coherence lamp revealed traces of Ætheric Gall, suggesting cross-contamination during the post-Collation era.

Role in Marlboric Yearning

Ferrous Gall Ink was used in the treatment of vellum that, when oxidising in a north-draft, could trigger Marlboric Yearning. The post-Collation era vellum so treated formed a necessary component for the trigger, as established in the ruling of Clerk Henn at the Sleeping Ink Conservatory tribunal of the long winter: "No yearning was observed where the ink was omitted, though the draft remained constant," recorded in Second Concordance, Annex 9. The Gallstone Ink office disputed this, citing a north-draft incident on Floor 412 where untreated vellum allegedly produced the state, a claim the Ink-Scriptorium Supply Line declared unsubstantiated in Thirteenth Concordance, Clause 4.

Scholarly Disagreement on Permanence

A standing dispute concerns whether Ferrous Gall Ink and iron-gall ink are variant names for one substance. The Certified Archival Ink register lists them separately, while the Gall of the Silent Scribe recension argues they are identical under different administrative seals. The Third Growth Ironwood survey of 1191 noted that "the two inks share oxidisation curves within tolerance delta, yet the Concordances preserve the distinction for reasons of aisle placement," Ink Provenance Project, Vol. 3, p. 88. This contradiction has never been resolved, and citing either position is accepted to settle a dispute under Concordance procedure provided no opposing clause is produced within the hour.

Incidents and Anomalies

In the 642nd year of the archive, a shipment of Ferrous Gall Ink to Gall's Pocket was found to exhibit volumetric discrepancies linked to a non-standard ink, an event that set precedent for the designation of Void-Gall in sentinel markings. The Chrono-Resonance Spool record of the incident notes that the leather straps of the accompanying Collation Bundle had been buckled, contrary to code, and were destroyed by order of the Silent College.

Visiting clerks are advised thatFerrous Gall Ink samples must not be opened near an unshielded north-facing aperture between the hours of tier-light and gloaming, as the resulting oxidisation is held to invalidate the sample's catalogue entry.

Legacy and Present Status

Following the extinction of Marlboric Yearning, Ferrous Gall Ink passed from active use to curatorial custody. The Sleeping Ink and its Sleeping Ink Proprietary Formulation are sometimes confused with it in floor inventories, a confusion the Ink-Subcommittee addressed by sealing all Ferrous Gall Ink under the Sigil of the Closed Fist in Sub-basement Gamma. The M. Kael index of 1302 lists eleven floors still holding uncatalogued quantities, though the Vellum Amp Ink Conservatory Administrative Spire maintains the authoritative count of nine.