Harris entered the
Indian Medical Service in 1878 and in 1880 served in the latter stage of the
Second Afghan War. In 1885, Harris became Civil Surgeon of
Simla and in 1890 was made Civil Surgeon of
Nagpur, a position he held until 1898. In 1900 he was selected for the Chair of Materia Medica at the
Medical College, Calcutta and Physician of the College Hospital. In 1908 he was appointed Inspector-General of Civil Hospitals in the
Punjab and
United Provinces, taking up the same role in
Bengal between 1910 and 1915. Harris wrote frequently in the
Indian Medical Gazette and the
British Medical Journal. He was made a Fellow of the
Royal College of Physicians in 1903 and
Companion Order of the Star of India in 1911. The same year he was elected President of
The Asiatic Society for 1911–12. In 1914 he was made Honorary Surgeon to
King George V and to the
Viceroy of India. ==Family life==