Born at Lancaster of a medical family settled there for a hundred years. His grandfather and father both practised in the town. His father, Christopher Johnson, senr, was an Edinburgh graduate, and for more than half a century a leading practitioner who cultivated both literature and science. His el

Born February 27th, 1817. Educated at St Bartholomew’s Hospital and in Paris. He was gazetted Assistant Surgeon to the 26th Foot on June 8th, 1841, was transferred to the St Helena Regiment on August 4th, 1843, and to the 2nd Dragoons on October 13th of the same year. He became Staff Surgeon (2nd Cl