Eratosthenes of Cyrene

FGrH 241 (diaphragma) — Eratosthenes, Geographika — main parallel / diaphragma through Rhodes (Strabo, Geographica 2.1.1) Converged + audit-sound

Ἐν δὲ τῷ τρίτῳ τῶν γεωγραφικῶν καθιστάμενος τὸν τῆς οἰκουμένης πίνακα γραμμῇ τινι διαιρεῖ δίχα ἀπὸ δύσεως ἐπ᾽ ἀνατολὴν παραλλήλῳ τῇ ἰσημερινῇ γραμμῇ … γράφει δὲ τὴν γραμμὴν ἀπὸ στηλῶν διά τε τοῦ Σικελικοῦ πορθμοῦ καὶ τῶν μεσημβρινῶν ἄκρων τῆς τε Πελοποννήσου καὶ τῆς Ἀττικῆς μέχρι τῆς Ῥοδίας καὶ τοῦ Ἰσσικοῦ κόλπου … παρὰ τὸν Ταῦρον … μέχρι τῆς Ἰνδικῆς· τὸν γὰρ Ταῦρον ἐπ᾽ εὐθείας τῇ ἀπὸ στηλῶν θαλάττῃ τεταμένον δίχα τὴν Ἀσίαν διαιρεῖν ὅλην ἐπὶ μῆκος.

In the third book of his Geography, setting out the map of the inhabited world, he divides it in two by a line from west to east parallel to the equinoctial line ... He draws the line from the Pillars through the Sicilian strait and the southern capes of the Peloponnese and Attica, as far as Rhodes and the Issic Gulf ... along the Taurus as far as India; for the Taurus, stretched in a straight line with the sea from the Pillars, divides all Asia lengthwise.

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 (Strabo 2.1.1 (Scaife/Perseus grc2, FULL)) within the overlapping span; encoding and orthography are folded. Collation codepoint-verified and adversarially audited (2026-06-26).

Lemma / locus	BNJ base	Witness	Type
παρὰ τὸν Ταῦρον (seg2)	παρὰ τὸν Ταῦρον (preposition + accusative, no intervening noun)	παρʼ ὅλην τὴν ὀρεινὴν τοῦ Ταύρου (παρά + acc. ὅλην τὴν ὀρεινήν + gen. τοῦ Ταύρου)	word-variant / BNJ paraphrastic compression (REAL apparatus, not encoding)
abridgement #1 (candidate first '…', between γραμμῇ and γράφει)	… (ellipsis)	πέρατα δʼ αὐτῆς τίθησι πρὸς δύσει μὲν τὰς Ἡρακλείους στήλας, ἐπʼ ἀνατολῇ δὲ τὰ ἄκρα καὶ ἔσχατα ὄρη τῶν ἀφοριζόντων ὀρῶν τὴν πρὸς ἄρκτον τῆς Ἰνδικῆς πλευράν.	abridgement (editorial ellipsis of verbatim-present witness material)
abridgement #2 (candidate second '…', between κόλπου and seg2)	… (ellipsis)	μέχρι μὲν δὴ δεῦρο διὰ τῆς θαλάττης φησὶν εἶναι τὴν λεχθεῖσαν γραμμὴν καὶ τῶν παρακειμένων ἠπείρων, εἶτα ἐπʼ εὐθείας πως ἐκβάλλεσθαι	abridgement (editorial ellipsis of verbatim-present witness material)
terminal punctuation at ἐπὶ μῆκος (NEWLY ADDED by auditor)	ἐπὶ μῆκος. (U+002E FULL STOP — sentence closed here)	ἐπὶ μῆκος, (comma; sentence continues 'τὸ μὲν αὐτῆς μέρος βόρειον ποιοῦντα τὸ δὲ νότιον.')	punctuation variant (REAL apparatus per policy) coincident with a witness-surplus tail
elision/apostrophe mark (ἐπ᾽/ἐπʼ at seg0 ἀνατολήν and seg3 εὐθείας)	U+1FBD GREEK KORONIS	U+02BC MODIFIER LETTER APOSTROPHE	ENCODING DIFF — not apparatus

Witness: Strabo 2.1.1 (Scaife/Perseus grc2, FULL). Verdict: CONVERGED — full candidate span witnessed in Strabo 2.
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-diaphragma.json.