Log of the Ȣ Survey Party (Ledger 440-Ξ)

The Log of the Ȣ Survey Party (Ledger 440-Ξ) is a survey ledger recording the descent of the party dispatched to Floor Ȣ and filed under the standing instruction that no floor designation be transcribed in the Latin alphabet where a sign of unknown value will serve. It is held in the annexe of the Log of Unanswered Questions and is calendared against the Survey Ledger, to which it supplies the sole measurement of distance between Floor Ȣ and the entry landing of Spiral 899. The ledger runs to ninety-four leaves, of which eleven are blank and four were blank until 440-Ξ/Am.2 was appended in the winter of Y-112.

Composition and Hand

The body of the ledger is the work of one hand, identified at folio 1v as Seal-Bearer Anselm Vey, seconded from the Indexers Guild in the forty-third year of the present recension. Vey's entries are written in a compressed administrative script with the floor designation rendered, in every instance, as Ȣ — a character the Seal-Bearer reproduced faithfully but, by his own marginal admission at folio 2r, could not pronounce. "The name of the floor was given to us twice," he writes, "and on neither occasion in a form the party could carry away."

The log-keeper's notes follow a fixed formula: compass bearing from the last fixed stair, cord paid out, and the disposition of the party at the hour of entry. The formula is held to have been imposed by Concordance 41 as a corrective to the loose narration of the Log of the Downward Seeking, which Vey's marginalia describe as "a travel book with a seal on it."

The Inverted Scriptorium

The party's central finding is the topologically inverted scriptorium described in the ledger and reproduced, with minor discrepancies, in the Ledger itself: a room in which every inscription, carved or inked, reads in mirror writing. Vey's party did not attempt a transcription. At folio 19v the Seal-Bearer records that the room's holdings were "legible to the left-handed of the party and to no other," and that the party's one left-handed porter was accordingly detached for the reading of the floor's placards, a duty he discharged for six hours and then declined to discuss.

"Inscription is not reversed in the sense of being written backward. It is written forward, and the observer is reversed."

— Ledger 440-Ξ, folio 21r, marginal note in the hand of Seal-Bearer Anselm Vey

This sentence has attracted more commentary than the rest of the ledger combined, and has never been satisfactorily parsed. The Curatorial Practicemaster Log of Amendments records an amendment tabled in Y-113 to strike the note as "an opinion and not a measurement," which lapsed on the second reading for want of a quorum.

Relation to Theta-9

Ledger 440-Ξ is frequently consulted alongside the foundational survey of Ventilation Shaft Theta undertaken by Expeditionary Party Theta-9 in Y-112-4, on the theory that the two documents describe the same circulation of air under different names. The theory rests on a single coincidence of phrasing: both log-keepers describe a draught arriving from "below and to the left of the party's direction of travel." M. Kael, lead log-keeper to Theta-9, filed a rebuttal in Y-112-4 denying the identification and observing that his party had never been issued a cord and would not have known what to do with one.

The Directive Theta-4 Application Log 0991 records the rebuttal as received. It records no disposition.

Disputed Length

The ledger's account of the descent occupies folios 31–66 and gives the party's cord as paid out to a total of four hundred and nine fathoms before it was cut at the floor's inner landing. It does not give a vertical distance. The omission is deliberate: Vey notes at folio 66v that the party's compass had failed at the third hour and that "the descent was measured in cord, and cord measures nothing but cord."

Two readings of the figure are current among the survey clerks. The first, upheld by the Office of Reckoning, holds that four hundred and nine fathoms of cord entered at the Ȣ landing must be assumed to leave it in the same measure, and that the floor therefore lies four hundred and nine fathoms from whatever the party left behind. The second, advanced by Orison Pell and adopted in the corrections to the 12th Spiral Survey, holds that a topologically inverted floor reverses the sign of the measure, so that four hundred and nine fathoms of cord entering Ȣ leave as four hundred and nine fathoms of cord arriving — "a distance of no length at all, and the floor therefore adjacent to every other." Pell's reading was struck from the Survey Ledger in Y-114 and reinstated in Y-119 by a ruling that cited the wrong folio throughout. It remains in force.

Subsidiary Status and Amendments

The ledger was entered as a subsidiary of the Log of Unanswered Questions in Y-108, on the ground that its principal question — what the scriptorium's inscriptions say — was never put to the record. It is calibrated against the Main Log in the manner described for Log.88.IMP.Δ, and its amendments are numbered in the same series. Amendment 440-Ξ/Am.4, appended in Y-119, replaces the phrase "the floor designated Ȣ" wherever it appears in the finding with the phrase "the floor so designated at the time of survey," the office having determined that the character had been reused for another floor in the interim and that the ledger had been cited in three disputes on the strength of the confusion.

Holding

Ledger 440-Ξ is consulted by sealed request. Requests citing the mirror-writing passage are answered with folios 19–24 only. Requests citing the cord measurement are answered in full, and are, by the annexe's own tally, three times as numerous.