Matthew 13:4

ἃ μὲν … ἄλλα δέ. For this use of the relative as a demonstrative cp. ὃν μὲν ἔδειραν ὃν δὲ�, ch. Matthew 21:35. οὓς μὲν ἐξέβαλον τῶν πολιτῶν οὓς δὲ� (Dem.); and for ἄλλα δέ, following ἃ μέν, cp. οἱ μὲν … ἄλλοι δὲ … ἕτεροι δὲ, ch. Matthew 16:14; Winer, p. 130. ὄς ἥ ὃ like ὁ ἡ τὸ was originally demonstrative, but the relative and the article are traced to independent originals. Clyde’s Greek Syntax, § 30. (Ed. 5.)

παρὰ τὴν ὁδόν, i.e. along the narrow footpath dividing one field from another.