ἀφ' ἡμέρας γίνεσθαι ἐν τῷ Μουσείῳ → in the Museum from early in the day
in crowds: use adj., P. and V. πυκνός, ἁθρόος.
densely populated, adj.: P. πολυάνθρωπος, Ar. πολυάνωρ.