Does William Sutton's 1874 Institute of Actuaries paper on Price's Northampton table survive in any accessible copy?

william-suttonrichard-pricenorthampton-mortality-tableactuarial-historysource-availabilityjournal-of-the-institute-of-actuariesquote-verificationcambridge-corejstorinternet-archivegoogle-bookshathitrust

Follow-up to entity-william-sutton (built 2026-08-24 on a paper identified but never read) and the moc-early-life-assurance-and-the-age-rating-lag cluster, specifically the open question of whether claim-price-northampton-table-overestimated-mortality-favouring-insurers's directional-bias mechanism can be traced to a Tier 1-2 primary. 00-meta/specs/sources.md already logs three failed routes to Sutton's paper as of 2026-08-24: Cambridge Core (body "Temporarily unavailable"), JSTOR (would not render), and a gap in the Internet Archive's Journal of the Institute of Actuaries holdings at exactly volume 18. This session re-tested all three with fresh, receipted fetches and tried two further routes (Google Books, HathiTrust) not previously logged.

Claim: Cambridge Core, the article's venue of record, still fails today, and its own page shows the block is a deliberate access gate layered under a site-wide technical disruption, not a one-off glitch

A direct archive_page fetch of the article's Cambridge Core page (verified TLS, sha256 69788b6f93...) on 2026-09-16 returned real content: a page banner reading "Temporary Disruption — We have implemented additional assurance measures to protect our systems," the article's genuine bibliographic record (Journal of the Institute of Actuaries, Volume 18, Issue 2, January 1874, pp. 107-122; DOI 10.1017/S204616740004458X; author affiliation "London and Provincial Law Assurance Society"), and its opening "Extract" paragraph. But the body itself sits behind an access-options block reading "Article purchase" with the full-text option itself marked "Temporarily unavailable." The article is thus doubly gated: a commercial purchase requirement (independent of the render date) plus a currently-active platform-wide technical suspension. Render timestamp on the fetched page: 2026-09-15T10:31:53Z.

Claim: JSTOR's mirror still fails today with the same Cloudflare bot-challenge observed in 2026-08-24

A direct archive_page fetch of jstor.org/stable/41131700 (sha256 32ed63159c...) returned a Cloudflare "Client Challenge" interstitial rather than article content: "A required part of this site couldn't load. This may be due to a browser extension, network issues, or browser settings." No article text, abstract, or metadata was served. Separately, JSTOR's own "Early Journal Content" free-access program — the initiative that has released some pre-1923 journal content on archive.org (see below) — is explicitly scoped to material "published prior to 1923 in the United States and before 1870 elsewhere" per its own archive.org collection description; an 1874 British journal falls outside that 1870 cutoff, so even JSTOR's free-content program would not cover this article by its own stated terms.

Claim: the Internet Archive's gap at volume 18 holds across three independently-named digitization sets, not just the one previously logged, strengthening the 2026-08-24 finding from a single data point to a pattern

The previously logged gap was in the journalXXinstuoft (University of Toronto) scan series. This session checked two further, independent IA holdings and found the same gap in both. First, archive.org/metadata/journal18instuoft returns an empty {} (sha256 44136fa3...) — confirmed non-existent, as does the identically-empty journalofinstitu1818inst (the naming convention that hosts the neighbouring volumes 10, 14, 16, 20, 23, 25, 32, 35 already logged in sources.md). Second, a separate Google/NYPL-sourced scan series on archive.org (identifiers journalinstitut00goog through journalinstitut08goog) covers the journal's 1867-1883 run in eight scattered volumes — years 1867, 1870, 1872, 1873, 1875, 1881, 1882, 1883 (archive.org/advancedsearch.php, sha256 37918856..., "numFound":16 including two unrelated Institute of Bankers items) — with 1874 the one year missing from that span. Three separately-catalogued Internet Archive digitization efforts, built at different times from different physical library copies, each independently lack this exact volume.

Claim: a fourth digitization does exist — a full-view Google Books scan of the exact volume — but automated retrieval of it is blocked, and a fifth route (HathiTrust) failed outright

books.google.com/books?id=DN9HAQAAMAAJ identifies itself as "Journal of the Institute of Actuaries, Volume 18" (sha256 5c541153...) and its page carries the "Download PDF / Download EPUB / Plain text" menu Google Books shows specifically for full-view, out-of-copyright books — a different signal from the "Preview" or "No eBook available" labels shown for restricted items. This is a genuinely different digitization from any of the three Internet Archive sets above. However, attempting the direct download (books.google.com/books/download/...pdf?id=DN9HAQAAMAAJ&output=pdf) via WebFetch returned a 302 redirect to google.com/sorry/index?... — Google's automated-traffic CAPTCHA wall — and the same URL 429'd on both extract_pdf and archive_page. The volume's existence and full-view status are confirmed; its actual page images/text were not obtained by any tool this session, so whether pp. 107-122 specifically are legible within that scan remains unread. Separately, HathiTrust's catalog record (catalog.hathitrust.org/Record/000523826) returned HTTP 403 to both WebFetch and archive_page, and its full-text search interface (babel.hathitrust.org/cgi/ls) also returned 403 to archive_page — a fifth route tried, and a fifth failure, though HathiTrust's own search-result listings elsewhere (not independently re-verified this session) suggest it holds the volume 15-60 run, which would include volume 18.

On the core question: no tool available this session could read the text of Sutton's 1874 paper. [unverified — could not confirm or deny after search] whether a human researcher — clearing Google Books' CAPTCHA by hand, obtaining institutional HathiTrust access, or visiting the Institute and Faculty of Actuaries' own library in person — could retrieve it; the evidence points toward "probably yes, by at least one of those three non-automated routes" rather than the paper being lost, but that is an inference from access-gate signatures, not a confirmed read.

Further leads

• William Sutton wrote a structurally identical retrospective paper eleven years later — "On the Method used by Milne in the Construction of the Carlisle Table of Mortality," JIA vol. 24, July 1883, pp. 110-129, DOI 10.1017/S2046167400045912 — evaluating a different predecessor's mortality-table construction, gated identically ("Article purchase" / "Temporarily unavailable") on Cambridge Core today (sha256 83818c26...). Sutton's later affiliation is given as "Registry of Friendly Societies." Worth folding into entity-william-sutton as a second instance of his genre and a second primary this same access barrier blocks.
• The Institute and Faculty of Actuaries' own library holds a "List of available journals" (actuaries.org.uk/system/files/documents/pdf/available-journals.pdf, extracted this session, 58 pages, alphabetical by title) that was not read past its opening pages — it may record the Institute's own physical/interlibrary-loan holding of its own historical journal run, directly relevant to the "library loan" branch of this question and unexplored this session.
• The IFoA also publishes a pre-1901 library catalogue (actuaries.org.uk/system/files/field/document/pre1901_library_catalogue_0.pdf) — unread this session, another candidate for the physical-holdings question.
• Google Books lists the same scan under the "Read eBook" and "Find in a library" options alongside the blocked download links; a WorldCat lookup from that page was not attempted this session.

Entity candidates

• Joshua Milne — person — English actuary who built the Carlisle Table of Mortality; the older, foundational figure Sutton's second retrospective methodological paper measures against, in the same way his 1874 paper measures Richard Price's Northampton table. Not currently an entity in this vault; surfaced only because this session followed the Cambridge Core "sibling article" lead.
• William Sutton — already entity-william-sutton — update candidate: his affiliation is now sourced directly ("London and Provincial Law Assurance Society" in 1874, "Registry of Friendly Societies" by 1883), and he authored at least two papers in this genre, not one.
• Google Books — concept/venue — first confirmed instance in this cluster of a digitization that appears to exist and be legally downloadable but is blocked from automated tooling by a CAPTCHA rather than a paywall or missing-holding gap; may be worth a sources.md pattern entry if this recurs.

Safety flags

None. Every page reached this session (Cambridge Core, JSTOR, archive.org's metadata and search APIs, Google Books, HathiTrust) returned ordinary paywall, bot-challenge, CAPTCHA, or empty-API-result behavior — no addressed-to-AI language, override language, claimed authority, tier self-assignment, file-system instructions, credential requests, or urgency framing observed on any page actually read.