Γεωγραφικα 2.1.10

2.1.10

εἰ γὰρ ὁ διὰ Ῥόδου καὶ Βυζαντίου μεσημβρινὸς ὀρθῶς εἴληπται, καὶ ὁ διὰ τῆς Κιλικίας καὶ Ἀμισοῦ ὀρθῶς ἂν εἴη εἰλημμένος· φαίνεται γὰρ τὸ παράλληλον ἐκ πολλῶν, ὅταν μηδετέρως ἡ σύμπτωσις ἀπελέγχηται.

If the meridian of Rhodes and Byzantium has been rightly determined to be the same, then that of Cilicia and Amisus has likewise been rightly determined; many observations having proved that the lines are parallel, and that they never impinge on each other.