describe the black mailing incident where the 3 friends strongly oppose such unhealthy practises

Harris and J. stop to eat lunch by the side of the river. A man appears and accuses them of trespassing, threatening to report them to the landowner. Harris – a large man – physically intimidates the visitor until he leaves. J. explains to the reader that the man was expecting a bribe, and most likely did not work for the landowner at all. He adds that these attempts at blackmail are common along the banks of the Thames, and that tourists should avoid paying people who do this.

J. then launches into a diatribe on the violence he would like to inflict on landowners who actually do enforce trespassing laws on tourists like himself, since their claim at owning the river is specious in his mind.

J. shares his feelings with his friends, and Harris insists that he feels more anger towards the owners than J. does. J. chides Harris for his intolerance, and tries to convince him to be more Christian.

During their conversation, Harris mentions that he would sing a comic song while hunting the owners