The man he is talking to is Sir Charles Bunbury, of the Jockey Club, who had the Prince warned off the Heath at Newmarket on account of the in-and-out riding of Sam Chifney, his jockey.
L'homme, avec lequel il cause, est sir Charles Bunbury, du Jockey-Club, qui a fait exclure le prince de Galles du champ de courses de Newmarket pour avoir déclaré et retiré la monte de son jockey Sam Chifney.