Jirah Dewey Buck (1838-1916) was an American author, professor and lecturer. In 1864 he was graduated from Western Homoeopathic College. In 1866 he was elected professor of physiology and microscopy in Cleveland Homoeopathic College. In 1882 Dr. Buck was elected dean and professor of theory and practice of medicine, and therapeutics and mental and nervous diseases. In 1876 he was president of the Homoeopathic Medical Society of Ohio, and in 1890 was president of the American Institute of Homoeopathy. His works include: A Study of Man (1888), Mystic Masonry (1896), The New Avatar and the Destiny of the Soul (1911), Modern World Movements (1913), Christos, The Genius of Freemasonry, Constructive Psychology, The Lost Word Found and Browning's Paracelsus.