{"id": "card_chain_napier_1614", "kind": "reference", "title": "Napier 1614 — Mirifici logarithmorum canonis descriptio", "body": "J. Napier (1614). Mirifici logarithmorum canonis descriptio. Edinburgh, 1614. Canonical: https://archive.org/details/mirificilogarith00napi. Free copy: https://archive.org/details/mirificilogarith00napi. License as found: public domain (the author died more than a century ago, or the work was published before 1930). What it gave the chain: the first table of logarithms, and the word.", "source": {"label": "J. Napier (1614), Edinburgh, 1614", "url": "https://archive.org/details/mirificilogarith00napi", "domain": "mathematics", "authority_tier": "reference"}, "shelf": "codex", "box": "chain", "bands": ["chain", "record", "1614", "napier", "mathematics"], "subject": "Mirifici logarithmorum canonis descriptio", "connections": [{"to_card_id": "card_floor_logarithm", "relationship": "part_of", "evidence": "a root of this chain - one of the two trees it began from"}, {"to_card_id": "card_chain_briggs_1624", "relationship": "enables", "evidence": "base-ten logarithms, thirty thousand of them to fourteen places - the digits of a number as its logarithm"}], "author": "engine", "created_at": 0.0, "updated_at": 0.0, "visibility": "public", "lifecycle_stage": "public", "volatility": "permanent", "surface": "secular", "generated": false, "call": "codex.chain", "facets": {"subject": ["1614", "mathematics", "napier", "record"]}, "presentation": {"glyph": "•", "kind_label": "chain", "by": "J. Napier (1614), Edinburgh, 1614", "authority": "reference", "posted": "", "standing": "", "link": {"url": "https://archive.org/details/mirificilogarith00napi", "host": "archive.org", "provider": "Internet Archive", "titled": "Napier 1614 — Mirifici logarithmorum canonis descriptio", "waybill_line": "", "reach": "", "embed": ""}}, "neighbors": [{"id": "card_floor_logarithm", "title": "The logarithm - the instrument the joints share", "relationship": "part of", "why": "a root of this chain - one of the two trees it began from", "href": "/card/card_floor_logarithm", "resolved": true}, {"id": "card_chain_briggs_1624", "title": "Briggs 1624 — Arithmetica logarithmica", "relationship": "enables", "why": "base-ten logarithms, thirty thousand of them to fourteen places - the digits of a number as its logarithm", "href": "/card/card_chain_briggs_1624", "resolved": true}], "house": {"door": "FIND", "kind": "card", "trail": "connections", "seal": "/card/card_chain_napier_1614", "next_step": {"do": "read the source itself", "door": "FIND", "web": "/reader.html?card=card_chain_napier_1614"}, "ends": "a verdict or a card · the trail · a seal · one next step"}}