Eratosthenes of Cyrene
FGrH 241 (circumnav) — Eratosthenes, Geographika — circumnavigability (Strabo, Geographica 1.4.6) Converged + audit-sound
ὥστ᾽ εἰ μὴ τὸ μέγεθος τοῦ Ἀτλαντικοῦ πελάγους ἐκώλυε, κἂν πλεῖν ἡμᾶς ἐκ τῆς Ἰβηρίας εἰς τὴν Ἰνδικὴν διὰ τοῦ αὐτοῦ παραλλήλου, τὸ λοιπὸν μέρος παρὰ τὸ λεχθὲν διάστημα ὑπὲρ τὸ τρίτον μέρος ὂν τοῦ ὅλου κύκλου.
So that, were it not for the vast extent of the Atlantic Sea preventing it, we could even sail from Iberia to India along the same parallel — the remaining portion, beyond the stated distance, being more than a third of the whole circle.
Apparatus — BNJ base vs open-corpus witness
Base text after Brill’s New Jacoby / Jacoby (FGrH). The apparatus records differences against the open-corpus witness (Scaife/Perseus) within the overlapping span; encoding and orthography are folded. Collation codepoint-verified and adversarially audited (2026-06-26).
| Lemma / locus | BNJ base | Witness | Type | Note |
|---|
| No substantive differences in the witnessed span — the BNJ base is verbatim against the open-corpus witness (encoding/orthography folded). |
Witness: Scaife/Perseus. Verdict: CONVERGED (apparatus complete, publishable as BNJ-based).
Open-corpus witness family: urn:cts:greekLit. This is a BNJ/Jacoby-based edition with an open-corpus apparatus, not a verbatim copy of the witness edition. Source data: explorers/_build/editions/ecoed-erat-fgrh241-circumnav.json.