Will call on CD next year, when he will have worked out the embryology of Amphioxus; he believes it is not primitive but a degenerate form of fish. He believes the true ancestors of vertebrates are annelids.

Has entered a newspaper controversy with W. P. Lyon [Homo versus Darwin (1872)] who ascribes to CD the saying "natural selection is a kind of god that never slumbers nor sleeps". FWH does not believe CD made this statement.