|Occupation||Physician, spiritualist, Theosophist, writer|
Wyld became interested in homeopathic medicine in 1851 after discovering the work of Samuel Hahnemann whilst a medical student at Edinburgh. After he obtained his M. D. he moved to London where he taught homeopathic medicine and in 1876 became president of the British Homeopathic Society.
Wyld was interested in mesmerism, spiritualism and Theosophy. He has been described as one of the "oldest mesmerists in England". Wyld was also a proponent of phrenology. He 1844 he joined the London Phrenological Society. He was a convinced spiritualist, in 1854 he met the medium Daniel Dunglas Home.
In October 1876 he defended the fraudulent slate-writing medium Henry Slade at his trial. He help to organize a spiritualists defense fund to cover Slade's legal costs. Because of this he received great criticism from the medical community.
Wyld was originally impressed by Blavatsky, believing her to possess mediumistic powers but later fell out with her, describing her as a rude and vulgar woman. He resigned after she had written an article in The Theosophist claiming "there is no personal or impersonal God." However, he did not abandon Theosophy altogether, he formed his own hybrid version of Christianity with Theosophy known as Christo-Theosophy.
- Homoeopathy (1853)
- Diseases of the Heart and Lungs: Their Physical Diagnosis, and Homeopathic and Hygienic Treatment (1860)
- Theosophy and the Higher Life; Or, Spiritual Dynamics and the Divine and Miraculous Man (1880)
- Theosophy: Or Spiritual Dynamics and the Divine and Miraculous Man (1895)
- Notes of My Life (1903)
- Oppenheim, Janet. (1988). The Other World: Spiritualism and Psychical Research in England, 1850-1914. Cambridge University Press. pp. 231-232. ISBN 978-0521347679
- Thomson, Thomson. (2006). Psychological Subjects: Identity, Culture, and Health in Twentieth-Century Britain. Oxford University Press. p. 27. ISBN 978-0199287802
- Oppenheim, Janet. (1988). The Other World: Spiritualism and Psychical Research in England, 1850-1914. Cambridge University Press. p. 221. ISBN 978-0521347679
- Pert, Alan. (2007). Red Cactus: The Life of Anna Kingsford. Books & Writers. p. 90. ISBN 978-1740184052
- McCorristine, Shane. (2010). Spectres of the Self: Thinking about Ghosts and Ghost-Seeing in England, 1750-1920. Cambridge University Press. p. 110. ISBN 978-0521747967
- Guttierez, Cathy. (2015). Handbook of Spiritualism and Channeling. Brill. p. 132. ISBN 978-9004263772
- Oppenheim, Janet. (1988). The Other World: Spiritualism and Psychical Research in England, 1850-1914. Cambridge University Press. p. 180. ISBN 978-0521347679