podtrzymywał błędne teorie na temat pochodzenia życia w swoich publikacjach.
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On the Structure and Nature of the Dracunculus, or Guinea-Worm (1863) Monograph on the Anguillulidae or Free Nematoids, with Descriptions of 100 New Species. Trans Linn Soc 25 (1865) On the Anatomy and Physiology of the Nematoids, with Observations on Their Zoological Position. (1866) The modes of origin of lowest organisms: including a discussion of the experiments of M. Pasteur, and a reply to some statements by Professors Huxley and Tyndall. London 1871. The beginnings of life; being some account of the nature, modes of origin & transformation of lower organisms, vol. 1. New York : Appleton, 1872 The beginnings of life: being some account of the nature, modes of origin and transformation of lower organisms, vol. 1. London, Macmillan and co. 1872 The beginnings of life: being some account of the nature, modes of origin and transformation of lower organisms, vol. 2. London, Macmillan and co. 1872 On Paralysis From Brain Disease in Its Common Forms. London, D. Appleton 1875. The Brain as an Organ of Mind. London, 1880. Appleton, New York 1880. Paralyses, Cerebral, Bulbar and Spinal. London 1886. The „muscular sense“;