 He built an early X-ray apparatus in his home at 32 George Square, Edinburgh.On 5 February 1896 he demonstrated X-rays at a meeting of the Edinburgh Medico-Chirurgical Society.In 1901 he became Physician in Charge of X-Rays at Edinburgh Royal Infirmary remaining in this role until ill-health caused his partial retirement in 1911 from which time he became "Extra Electrician" until his full retirement in 1925.He was one of the first, in 1902, to use X-rays in the treatment of cancer.