The Aperture Seal

The Aperture Seal is a cerulean wax seal bearing the sigil of the Central Registry, affixed to a registered aperture to transform it into a Receiving Aperture. It is distinct from the standard seal of a Receiving Aperture, from the Taxonomic Isolation Seal, and from the Seal of the Downward Gate, though the four are frequently confused in correspondence, and more than one dispute has been settled only by producing the wax itself. Aperture Seals are governed by the Aperture Seal Ordinances, and sealing procedures involving them fall under the broader regulations set out in Aperture Seal Directive 7-Alpha.

No aperture may be designated Receiving without the affixing of an Aperture Seal in the presence of at least one accredited Seal-Warden. The wax is poured at a working temperature of 71 degrees, a figure fixed by Concordance 12-A, Clause 3 and never revised, though the reason for it has not survived in the record.

Composition and affixing

The Seal is composed of cerulean wax blended with a small quantity of ground glass recovered from decommissioned Sealed Apertures; the admixture is what gives the impression its characteristic coldness to the touch, and is the only component the Central Registry will not permit to be substituted. A Seal-Warden pours, presses, and withdraws in a single motion. A second motion voids the impression and the wax must be returned to the crucible.

Impressions are recorded in the Seal-Brand ledger by number, floor, and hour. Wardens are required to record the hour even when the hour is disputed between floors, which it often is. A note from the Scriptorium, appended to the 3145 ledger, reads simply: "Wardens are reminded not to warm the wax in the mouth."

The Quarantine distinction

A common error holds that the Aperture Seal and the Aperture Seal used for quarantine are the same instrument. They are not. Quarantine is signified by the cerulean seal bearing the sigil of the Central Registry under the provisions of the Aperture Seal Ordinances, while the Receiving designation requires the additional countersignature prescribed by Aperture Seal Directive 7-Alpha. A minor industry of correction has grown up around this confusion; the Registry maintains a standing paragraph for it, reused verbatim since at least the Aperture Reckoning.

The Kell dispute

In the winter of 3145 a Seal-Warden named Emeric Kell affixed an Aperture Seal to the aperture later catalogued as Aperture Alpha-7, Sub-Level 33 without first obtaining the countersignature. The Registry argued that the affixing was void ab initio; Kell argued that the countersignature requirement applied only to apertures above the ninth floor, a reading he supported by citing an uncatalogued recension of the Ordinances. The matter consumed eleven sittings. The ruling, In re: Aperture Seal Δ-47 (3145), found that Kell's reading was correct but that his seal had been improperly warmed. He was censured for the warming and exonerated of the rest.

Kell thereafter refused to countersign anything, and his seals are today prized by collectors for the irregularity of their impressions. The Registry has declined to comment on this trade.

Disputed authority

The principal scholarly disagreement concerns which body may declare an aperture Receiving. Aperture Seal Directive 7-Alpha assigns the authority to the Custodians of the Aperture; the Seal-Warden chapter at Unassigned Stairwells maintains that authority rests with the sealing Warden alone. A third reading, advanced by the Scriptorium of the Ninth Landing and never formally withdrawn, holds that the Seal itself decides, and that the Warden merely assists.

This last reading is not so eccentric as it sounds. Seal-Wardens have reported wax that refused to take an impression at certain apertures, and the Registry has on four occasions recorded a Seal that appeared without a pour. The Custodians have ruled these incidents "inoperative and not to be cited", which has of course ensured that they are cited constantly.

Inventory of seals in current use

The Registry's most recent return lists the seals held in active service, as follows:

• Seal S-1 through S-114: Receiving designations, general issue.
• Seal S-115 through S-131: Receiving designations, apertures of disputed floor.
• Seal Q-1 through Q-9: Quarantine, held under the provisions of Aperture Seal Directive 7-Alpha.
• Seal D-1: Downward Gate, transferred to the Seal of the Downward Gate chapter by misdirection in 2987 and not returned.

The requisition of a Seal from stores requires a completed Form Ω-3 and the signature of the requesting Warden. Stores will not release a Seal to a Warden who has not signed, and will not accept a signature made with the Warden's own seal.

Storage and maintenance

Between affixings, Aperture Seals are kept in the cool vaults beneath the Registry, wrapped in unbleached linen, and turned at the half-year. The linen is changed annually. The vaults are attended by two keepers who do not speak to one another, an arrangement the Registry has found satisfactory for upward of a century and has declined to alter.

Seals that have lost their impression may be recoined by the Seal-Brand office. Seals that have lost their sigil may not, and are retained for reference. The Registry has approximately forty such seals and no one has proposed what to do with them.