He wrote an early book on X-ray techniques and he was president of the radiology section of the Royal Society of Medicine.
[1] His uncle was John Mitchell Bruce, a physician who wrote a widely read textbook, Materia Medica and Therapeutics.
After medical school he served in the South African Field Force and he became interested in the applications of X-ray to the management of war injuries.
[1] After his military service, Bruce became an assistant to Sir James Mackenzie Davidson, a doctor at Charing Cross Hospital and the first radiologist to achieve knighthood.
[6] Early in his career, Bruce wrote a book, A System of Radiography, with an Atlas of the Normal, which was favorably reviewed in the Dublin Journal of Medical Science.
By the time Bruce got sick, the disease had also been noted among several people in Italy who worked with X-rays or radium.
[11] Bruce's death aroused public concern about the effects of radiation exposure, leading to the founding of the British X-Ray and Radium Protection Committee, which was headquartered in London.