On Tabes Dorsalis: The Lumleian Lectures is a book written by David Ferrier in 1906. The book contains a series of lectures given by Ferrier at the Royal College of Physicians in London, England. The lectures focus on the medical condition known as tabes dorsalis, which is a degenerative disease of the spinal cord and nervous system. Ferrier discusses the symptoms, causes, and treatments of the disease, as well as its impact on the body and mind...