Simplify the following text for a Grade 8 native English-speaking person.
Original: Xenophon , born around 433 BC , in his Treatise on Hunting or Cynegeticus refers to a hound that hunted hares by scent and was followed on foot .
Simplified: In the Treatise on Hunting or Cynegeticus , written by Xenophon , who said there was a hound that hunted hares by scent and was followed by foot .