He was born in Rajshahi (now part of Bangladesh) on 6 November 1879 the son of Dr Donald Morison who had come to India as a medical missionary with his wife in 1878.
[1] After some practical experience (probably at Glasgow Royal Infirmary he joined the Indian Medical Service and returned to the country of his birth in 1906.
[1] In 1932 he was created a commander of the Order of the Indian Empire by King George V. In 1937 he was elected a fellow of the Royal Society of Edinburgh.
His proposers were Anderson Gray McKendrick, William Glen Liston, Percy Samuel Lelean, and John Du Plessis Langrishe.
[2] He retired from the Indian Medical Service in 1934 and returned to Scotland in 1935 where he then undertook research on behalf of the Royal College of Physicians of Edinburgh.