The people of Ceos fought on the Greek side at Artemisium and Salamis; they joined the Delian League and also the later Athenian alliance in 377 B.C. They revolted in 3 6 3-3 62, but were reduced again, and the Athenians established a monopoly of the ruddle, or red earth, which was one of the most valuable products of the island.
In the early periods of the history of other countries this seems to have been the case even where the dog was esteemed and valued, and had become the companion, the friend and the defender of man and his home; and in the and century of the Christian era Arrian wrote that "there is as much difference between a fair trial of speed in a good run, and ensnaring a poor animal without an effort, as between the secret piratical assaults of robbers at sea and the victorious naval engagements of the Athenians at Artemisium and at Salamis."
Near the north-east extremity of the island, and almost facing the entrance of the Gulf of Pagasae, is the promontory of Artemisium, celebrated for the great naval victory gained by the Greeks over the Persians, 480 B.C. Towards the centre, to the N.E.
Paros also sided with Xerxes against Greece, but after the battle of Artemisium the Parian contingent remained in Cythnos watching the progress of events (Herod.