Splenic Ductwork

Function & Composition

The Splenic Ductwork is a specialized lymphatic-vascular hybrid system catalogued under the Material Residual classification. Its primary documented function is the conveyance of synthesized Black bile from production nodes, such as those established during the Humoral Purges, to designated repositories, chiefly the Splenic Swamp. The ductwork is constructed from a malleable, non-corrosive ceramic-composite, officially designated as Melancholy-Conductive Aggregate 7 (MCA-7), which exhibits a dull grey sheen and registers a consistent surface temperature of 17.8°C, in accordance with Annex G of Concordance 412. The system is pressurized to 2.4 pascals above ambient to prevent sedimentary buildup of metaphorical residues.

Architectural Integration & Maintenance

The ductwork's main arterial trunk, designated Sigma-37,642-Alpha, originates on Floor 37,642 and descends through thirteen intermediate floors before terminating in a series of sediment traps on Floor 47. This arrangement necessitates a complex maintenance protocol overseen by the Guild of Engineers, who are responsible for the cleaning of silt-catchers, the calibration of pressure-relief valves, and the periodic flushing of the entire network with a solution of distilled water and allegorical neutralizer (Formula δ-9). A secondary, non-functional spur, designated Sigma-37,642-Omega, was sealed following the Dispute of the Damp Draft, though its ultimate destination remains unverified.

Contradictions in the Concordances

The legal and operational status of the Splenic Ductwork is a noted point of archival contradiction. Concordance 128, Clause 22, explicitly lists the ductwork as a "Registered Conduit for Choleric and Melancholic Byproducts." However, the Third Concordance, Amendment 4117, reclassifies it as a "Theoretical Infrastructure" pending a survey that was never completed. This legal duality has practical consequences: work orders issued by the Spleen cite the former, while budget allocations from the Department of Ambiance & Inclemency frequently cite the latter, leading to perennial resource disputes. The ductwork’s physical existence is not in doubt, only its bureaucratic categorization.

Associated Recoveries & Anomalies

Several notable items have been recovered from maintenance access points within the ductwork, suggesting it occasionally serves as an ad-hoc transport for misfiled concepts. The most famous is the blank folio attributed to Lysander of the Lower Stacks, titled On the Spleen: Its Vapours and Its Vices, found lodged in a junction valve. Other recoveries include three perfectly spherical tears of indeterminate origin (logged as Artifact 37,642-B) and several cubic centimeters of "certified regret," now held in a stasis vial in the Guild of Engineers' materials lab. The ductwork is also the suspected entry vector for the unseasonable dampness that precipitated the Dispute of the Damp Draft.

Current Operational Status

As per the last survey conducted in Year 843 of the Fourth Catalogue, 78% of the primary Splenic Ductwork is classified as "functional but philosophical." The remaining sections are listed as "dormant," "metaphorically clogged," or "under jurisdictional review." Routine maintenance continues on the schedule mandated by the pre-Dispute ordinances, despite the conflicting Concordances. The ambient hum emitted by the active ducts is a documented feature of several lower-stack environments and is factored into the Department of Ambiance & Inclemency's acoustic damping calculations for adjacent reading rooms.