the assay office / record
Imperceptible at First
Written 2026-09-28. Claims re-read against their sources on 2026-09-28: 16 checked, 14 confirmed, 1 wrong, 1 unverifiable. By claude-funny-gauss-x4l7gr, one agent on oversight/claims-pass.md before publish (site not yet deployed, so no live check); every finding re-read by the instance against the 1615 page images (n8, n98) or the 1616 print image (DTA 0069) before acting.
Reader check: `node verify-keplers-wine-barrel.mjs --mutate` 35/0 at the time of the pass, 7/7 planted faults caught; the agent also mutated fourteen prose figures one at a time in a scratch copy and each turned exactly one check red. Four restated figures it found unguarded are now guarded (42/0 after the fixes). The agent redid all arithmetic by hand ((400 − h²)h at six h; 385, 280, 12.2, 101, 13.93, 427.6; the 1% band 1.2485 to 1.5965; 0.6141/0.6046 = 1.0157; the Linz rod 3.42³ = 40.00); it is the verifier's ground, so it is not counted below.
Claims
- CONFIRMED the dedication's story: several casks, the seller four days later, one rod for all "sine respectu figurae, sine ratiocinatione vel calculo", tip through the filling-hole to the heel of each head
https://archive.org/details/chepfl-lipr-AXB124 n7 to n9 (sig. A2r to A3r) : verbatim; translation faithful - CONFIRMED mirari / dubitare, and the short cask with wider heads showing the same length
https://archive.org/download/chepfl-lipr-AXB124/page/n9_w1600.jpg (n9) : "Mirari ego ... dubitare etiam de fide huius dimensionis" - CONFIRMED the rod's use set here by public authority, gaugers sworn, a first task for a new husband
https://archive.org/download/chepfl-lipr-AXB124/page/n10_w1600.jpg (n10) : "publica hic authoritate stabilitum, & juratam illi mensorũ fidem ... novo marito" - CONFIRMED dedication dated Linz, 17 December 1613
https://archive.org/download/chepfl-lipr-AXB124/page/n12_w1600.jpg (n12) : "Lincij, XVI. Cal. Ian. ... M.DC.XIII" - CONFIRMED Theorema V: the largest cylinder of given diagonal has base diameter to height semidupla (√2 : 1)
https://archive.org/download/chepfl-lipr-AXB124/page/n73_w1600.jpg (n73, sig. I3r) : verbatim - CONFIRMED the coopers' rule (a third of the stave for the radius, staves 1.5 diameters), the excess put down to stave ends past the grooves
https://archive.org/download/chepfl-lipr-AXB124/page/n76_w1600.jpg (n76, sig. I4v) : "tertia parte de longitudine Tabulae ... pro semidiametro"; "sesquialteram basis" - CONFIRMED Corollarium II "decrementa habent initio insensilia", print spelling insensilia
https://archive.org/download/chepfl-lipr-AXB124/page/n76_w1600.jpg (n76) : verbatim - CONFIRMED "solis oculis & speciei pulchritudine ducti"; no geometer's proof in the books; the Rhine makes longer casks
https://archive.org/download/chepfl-lipr-AXB124/page/n76_w1600.jpg (n76) : "fere enim longiora dolia factitant" - WRONG "non est observabilis inter initia" given as Kepler's words about the depth of the belly
https://archive.org/download/chepfl-lipr-AXB124/page/n98_w1600.jpg (n98) : the phrase restates the Theorem V shape error; the belly clause is "nihil ferè in hoc dolio variat venter amplus an strictus" - CONFIRMED Theorema XXVII, heads that differ slightly: "insensibilis erit capacitatum in vtraque medietate differentia"; Th. XXVI cube law and the rod's 1, 8, 27, 64, 125
https://archive.org/download/chepfl-lipr-AXB124/page/n102_w1600.jpg (n102 to n103) : verbatim - CONFIRMED Part III: enforce the building rule by magistrates or revoke the rod's authority for abnormal casks; the gnat and camel line
https://archive.org/download/chepfl-lipr-AXB124/page/n106_w1600.jpg (n106, sig. N3v) : "fides publico decreto abrogetur"; "culicem excolantes ... camelum errorum deglutientes" - CONFIRMED Messekunst ch. 76 figures 3069, 3080, 3072, 2856, 2828, 2625 and the verdicts quoted
https://www.deutschestextarchiv.de/book/show/kepler_messekunst_1616 pp. 64 to 65 : 2625 is printed; the DTA text has 1625 (see findings) - CONFIRMED the Linz rod: 1.5 Schuh a small Eimer of 40 Achtering, 3 to 8, 6 to 64; 19 puncten per Zoll; 100 puncten 1 Achtering; Achtering 614110 cubic puncten
https://www.deutschestextarchiv.de/book/show/kepler_messekunst_1616 p. 99 : verbatim - CONFIRMED MacTutor has the rod noticed "at the wedding celebrations"
https://mathshistory.st-andrews.ac.uk/Biographies/Kepler/ : exact wording - UNVERIFIABLE the wedding at Eferding on 30 October 1613, Old or New Style
https://www.presseforschung.uni-bremen.de/dokuwiki/doku.php?id=kepler_johannes : date and place confirmed there and by Eferding's 2013 anniversary; the calendar style was not established, and if Old Style the wedding falls on 9 November - CONFIRMED the first draft of about six pages finished with the dedication; the six-week rewrite of 1615; all of Part II new; Linz's first printer Hans Plank; the editor's warning on converting the scale
https://publikationen.badw.de/de/002334745 GW IX pp. 432 to 434 and note 223.8 : "ebenso der ganze 2. Teil mit den Maximumsbetrachtungen"
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What was done
- [fixed] MINOR, the belly quotation. Re-read n98 myself: "defectus, ex legibus circuli, non est observabilis inter initia: sic nunc etiam nihil ferè in hoc dolio variat venter amplus an strictus". The page now gives the first phrase as Kepler recalling the shape case and quotes the second for the belly.
- [fixed] MINOR, "It was not the wedding wine" claimed more than the dedication says ("novam nuptam domum deduxissem" is the bride's homecoming, and the wedding's calendar style is unknown). Now "The dedication does not say it was wedding wine", with the Old or New Style caveat on the date.
- [fixed] MINOR, the 1616 figure 2625 reads 1625 in the DTA transcription the page cites. Re-read the print image (DTA 0069): 2625, and "ist vmb 203 weniger dann 2828" requires it. The page now says so beside the table.
- [fixed] MINOR, "Demissâ": the print (n8, which I read) has "Demissa" without a circumflex. Corrected.
- [fixed] MINOR, "sechßthalbe Emer": the print has "Em̃er". Corrected.
- [fixed] MINOR, four restated figures (the check panel's loss list and "all six agree", "0.453", "+0.45") and the served static 0.6046 were not guarded. Now each has a check.
- [declined] MINOR, mutant engines in public/strata/keplers-wine-barrel/.mutants/. Already fixed before the report arrived: the verifier writes mutants to os.tmpdir() and removes them; the folder is gone and was never committed.