Passage 1.28.8
ἔστι δὲ Ἀθηναίοις καὶ ἄλλα δικαστήρια οὐκ ἐς τοσοῦτο δόξης ἥκοντα. τὸ μὲν οὖν καλούμενον παράβυστον καὶ τρίγωνον, τὸ μὲν ἐν ἀφανεῖ τῆς πόλεως ὂν καὶ ἐπʼ ἐλαχίστοις συνιόντων ἐς αὐτό, τὸ δὲ ἀπὸ τοῦ σχήματος ἔχει τὰ ὀνόματα· βατραχιοῦν δὲ καὶ φοινικιοῦν ἀπὸ χρωμάτων τὸ δὲ καὶ ἐς τόδε διαμεμένηκεν ὀνομάζεσθαι. τὸ δὲ μέγιστον καὶ ἐς ὃ πλεῖστοι συνίασιν, ἡλιαίαν καλοῦσιν. ὁπόσα δὲ ἐπὶ τοῖς φονεῦσιν, ἔστιν ἄλλα· καὶ ἐπὶ Παλλαδίῳ καλοῦσι καὶ τοῖς ἀποκτείνασιν ἀκουσίως κρίσις καθέστηκε. καὶ ὅτι μὲν Δημοφῶν πρῶτος ἐνταῦθα ὑπέσχε δίκας, ἀμφισβητοῦσιν οὐδένες·
The Athenians also have other law courts, but they have not reached such renown. One is called Parabyston, another Trigonon: the first is in an obscure part of the city, and only a very few gather there, while the second derives its name from its shape. Batrachion ("Frog") and Phoinikion ("Red") have their names from their colors, and one of them continues to be known as such to this day. The largest court, where most gather, they call the Heliaia. There are additional courts dealing specifically with murderers; among these is one called "At the Palladion," established to judge those who have committed involuntary homicide. And no one disputes that Demophon was the first to stand trial in this place.