Acron, the son of Xenon, was born at Agrigentum; and opened, in company with Empedocles, a medical and philosophical school at Athens. During the plague, described by Thucydides, he recommended, says Plutarch ("De Isid" ii) the practice of fumigations to cure the infection supposed to be in the air. But when the chronicler of Chaeronaea adds, that that many benefited from it, he states what is distinctly denied by Thucydides, … Wikipedia