a disciple and contemporary of Aristotle, was a native of Rhodes. His importance in the history of philosophy may be judged from the fact, that after his master he and Theophrastus were regarded as the only worthy exponents of that great thinker's doctrines. He was himself the author of some works on the Categories, on Physics, and on Analytics, which have all perished, but his fame rests chiefly on his editorial comments upon Aristotle. So closely has he followed out his master's system, that some of Aristotle's works have, in modern times, been attributed bodily to him. Certain it is, that to him we are indebted for a valuable portion of that philosopher's work on Physics, left imperfect and incomplete by his death; and it is also not unlikely that he bore a principal share in the editing and arrangement of his Ethics. No details of Eudemus' personal history have come down to us.