They met, according to agreement, as soon as it grew dark.

It happened that there was one who witnessed their interview, and heard all that passed between them, and that was Don Gordon, who had just returned from the landing, whither he had been to mail a letter to his cousin.
Not finding the hostler about when he came back, Don attended to his pony himself, and was about to shut up the barn for the night, when he discovered what he supposed to be a thief prowling about.

The lighted end of a cigar glowed through the darkness a moment later, and then Don saw that the prowler was his cousin Clarence.

Greatly amused at his mistake, he was about to make his presence known, when it occurred to him that since Clarence had taken so much pains to get out of sight of the family, in order that he might enjoy his cigar, perhaps he would not like it if Don caught him in the act; so Don remained in his place of concealment, heard every word that was said when Godfrey came up, saw both of them get over the fence in the potato-patch, and followed and watched them while they were digging for the barrel.
Now, Don was one of the most inveterate practical jokers in the world, and the most accomplished one we ever saw.

Godfrey had received more than one proof of his skill.