Gregory of the Seventh Spiral

Gregory of the Seventh Spiral was a mid-Second Librarianate archivist, architect, and calendrical reformer, remembered chiefly for popularizing the Tower Gregorian Month in construction timetables and for the design of the Seventh Spiral annex. He is not recorded as having held any office above the rank of Senior Registrar of Works, and no portrait, seal, or signed original in his hand survives; his influence is attested almost entirely by the documents of other people adopting his tables.

The scarcity of primary material has made Gregory an unusually contested figure. The Seventh-Spiral Registry lists him under two separate entries — one as "Gregory, Archivist" and one as "Gregory, Master of the Annex" — which the Registry has declined to merge since the Seventh Spiral Inquiry ruled on the matter in a finding discussed below.

The calendrical reform

Before Gregory's reforms, the duration of a working month on the spiral floors was set locally, by the surveyors who happened to hold the contract. A single ledger might reconcile a thirty-one-day month on its first page with a twenty-eight-day month on its last. Gregory's innovation was not to standardize the month itself but to insist that any timetable for spiral construction state its month convention in the header, a practice he called "declaring the unit before spending the stone."

His Tables for the Ordering of Spiral Works, issued in three recensions over eleven years, spread the practice through the building trades faster than through the archive itself. The Clerks of the Seventh Spiral adopted the tables in full; the Seventh Metalwrights adopted them only in their contracts for ironwork above the fourth landing. Gregory noted the partial adoption in a marginal comment preserved in the Chronicle of the Seventh Spiral’s Excavation:

"The metalwright will measure his month as he measures his beam, by what fits the doorway. I have stopped arguing and begun printing the header in larger type."

— Chronicle of the Seventh Spiral’s Excavation, folio 412

By the close of the Second Librarianate the declared header was near-universal in spiral timetables, though the months so declared still varied. The standardization of the name outran the standardization of the thing, a discrepancy the Commentaries on the Seventh Concordance treat as instructive rather than embarrassing.

The Seventh Spiral annex

Gregory designed the annex that carries the spiral's name at the request of the Seventh Spiral Administrative Spire, which required additional registry accommodation on the upper inner face without interrupting quarrying of the Basalt of the Seventy Seventh Spiral. His solution — a stack of narrow galleries braced against the inner face at seven offsets — was praised for economy and criticized for its stair widths, which were narrower than the prevailing survey guidance by roughly the breadth of a shoulder.

The widths were never corrected. A maintenance note appended to the annex plans in a later hand reads: "Galleries to be swept one clerk at a time." The note remains in force and is reproduced on the door of the eastern stairhead.

Gregory's annex timetables were the first in the spiral to run the Gregorian Month across a full build programme rather than a single season, a decision that obliged his contractors to reckon months forward across three years. The reconciliation tables he supplied for this purpose are preserved as Annex 6 of the Seventh Concordance.

The Registry dispute and the Inquiry

The Pragmatists of the Seventh Spiral petitioned for the Seventh Spiral Inquiry on the ground that the Registry had begun admitting entries on the strength of tradition alone. Their example was Gregory. The Pragmatists argued that his two Registry entries rested on "a name and a practice, and neither of them a document," and that the Registry should record him once, or not at all, until a signed instrument was produced.

The Inquiry sat for two sessions and produced its characteristic finding: it affirmed both entries, ruled that they referred to the same man, and declined to merge them on the reasoning that "the Registry's function is to record what is asserted, not to reduce it." The ruling is cited in the Seventh Concordance, Revision 12 as the model for the Registry's treatment of persons whose documentation is disputed.

It has also been cited, by the Registry's own clerks, as authority for refusing to correct anything. A later auditor's note in the duplicate ledgers held at Spiral 22 observes that the ruling "has been read more widely than it was written."

Scholarly disagreement

The principal disagreement concerns whether Gregory devised the Gregorian Month or merely propagated it. The Seventh Quorum of Scribes, ratifying the findings of the Seventh Spiral Survey, attributed the month's "settlement and circulation" to him without qualification. The Commentaries on the Seventh Concordance, working from earlier survey fragments, maintain that the month was already in use among the quarry surveyors of the upper inner face and that Gregory's contribution was the header convention alone.

A third position, advanced in a marginal gloss in the twelfth revision and never formally adopted, holds that Gregory invented the month twice — once for the archive and once for the builders — and that the two versions differed by a day, "which he accounted a mercy to the reconcilers." No table supporting this gloss has been found.

Reputation and later references

Gregory appears in the Tower's records more often as a citation than as a subject. His name attaches to the Seventh Spiral annex, to the header convention still printed on spiral timetables, and to the unresolved pair of Registry entries that the Seventh Spiral Inquiry chose to leave standing. The Sealing of the Seventh Spiral names him among the persons whose works were sealed "in place and without reduction," a formula that has never been explained to general satisfaction.

He is the subject of the elegiac Re: The Lament of the Seventh Spiral, whose attribution to him is doubted on stylistic grounds and whose author is listed in the Registry as "Gregory, possibly," a third entry that the Inquiry's ruling does not cover and that the Registry has never been asked to resolve.