Note 280 — Chapter II · SCIENCE AND RELIGION

The oldest reference to a poem Περὶ φύσεως is in the Geneva scholium on Il. xxi. 196 (quoting fr. 30), and this goes back to Krates of Mallos. We must remember, however, that such titles are of later date than Xenophanes, and he had been given a place among philosophers long before the time of Krates. All we can say, therefore, is that the Pergamene librarians gave the title Περὶ φύσεως to some poem of Xenophanes.