But the forces of Sitalkês, collected from many different portions of Thrace, were tardy in coming together. He summoned all the tribes under his dominion, between Hæmus, Rhodopê, and the two seas: the Getæ, between Mount Hæmus and the Danube, equipped like the Scythians, their neighbors on the other side of the river, with bow and arrow on horseback, also joined him, as well as the Agrianes, the Lææi, and the other Pæonian tribes subject to his dominion; lastly, several of the Thracian tribes called Dii, distinguished by their peculiar short swords, and maintaining a fierce independence on the heights of Rhodopê, were tempted by the chance of plunder, or the offer of pay, to flock to his standard. Altogether, his army amounted, or was supposed to amount, to one hundred and fifty thousand men, one third of it cavalry, who were for the most part Getæ and Odrysians proper. The most formidable warriors in his camp were the independent tribes of Rhodopê; but the whole host, alike numerous, warlike, predatory, and cruel, spread terror amidst all those who were within even the remote possibilities of its march. Starting from the central Odrysian territory, and bringing with him Agnon and the other Athenian envoys, he first crossed the uninhabited mountain called Kerkinê, which divided the Pæonians on the west from the Thracian tribes called Sinti and Mædi on the east, until he reached the Pæonian town or district called Dobêrus;[366] it was here that many troops and additional volunteers reached him, making up his full total. From Dobêrus, probably marching down along one of the tributary streams of the Axius, he entered into that portion of Upper Macedonia, which lies along the higher Axius, and which had constituted the separate principality of Philip: the presence in his army of Amyntos son of Philip, induced some of the fortified places, Gortynia, Atalantê, and others, to open their gates without resistance, while Eidomenê was taken by storm, and Eurôpus in vain attacked. From hence, he passed still farther southward into Lower Macedonia, the kingdom of Perdikkas; ravaging the territory on both sides of the Axius even to the neighborhood of the towns Pella and Kyrrhus; and apparently down as far south as the mouth of the river and the head of the Thermaic gulf. Farther south than this he did not go, but spread his force over the districts between the left bank of the Axius and the head of the Strymonic gulf,—Mygdonia, Krestônia, and Anthemus,—while a portion of his army was detached to overrun the territory of the Chalkidians and Bottiæans. The Macedonians under Perdikkas, renouncing all idea of contending on foot against so overwhelming a host, either fled or shut themselves up in the small number of fortified places which the country presented. The cavalry from Upper Macedonia, indeed, well armed and excellent, made some orderly and successful charges against the Thracians, lightly armed