3. A Greek astronomer, who probably lived as early as the time of Eratosthenes, and who wrote a work on meteors, of which a fragment is preserved in Joannes Philoponus's Commentary on Aristotle's Meteorologica. He also wrote a little work on comets, to prove that they foreboded neither good nor evil. (Agatharchid. apud Phot. p. 460b. ed. Bekker.) Some writers ascribe the latter work to Arrianus of Nicomedeia. A few fragments of it are preserved in Stobaeus. (Eclog. Phys. 1.29 and 30.)