Note 278 — Chapter III · HARVEST FESTIVALS. The Thargelia, Kallynteria, Plynteria.
Reading edition
As to the god worshipped at the Thargelia it is probable that when godhead came to be formulated Demeter Chloe long preceded Apollo. Diogenes Laertius (II. 44) notes that on the sixth day of Thargelia when the Athenians purified the city, sacrifice was done to Demeter Chloe. Here as elsewhere Apollo took over the worship of an Earth-goddess.