2 adjectives to describe old

Outside the gate a couple of forest-ponies were waiting,stout, lively, five-year-olds, equal, if not to a two-forty heat, yet to twenty miles of steady trot without distress,brown and sleek as you please, with the knowingest eyes, and intelligence expressed in the impatient stamp of the fore-foot, and good-humor in the twitching of the ear.

Outside the gate a couple of forest-ponies were waiting,stout, lively, five-year-olds, equal, if not to a two-forty heat, yet to twenty miles of steady trot without distress,brown and sleek as you please, with the knowingest eyes, and intelligence expressed in the impatient stamp of the fore-foot, and good-humor in the twitching of the ear.

2 adjectives to describe  old