Royal Institution frozen, he was not allowed to practise as a doctor, and Humphry Davy was appointed as his assistant, so he resigned. Humphry Davy was an even greater success, as was his assistant and successor Michael Faraday. Davy's immediate successor was William Thomas Brande. Thus the Institution has had an instrumental role in the advancement of science since its founding. Notable scientists who have worked there include Sir Humphry Davy (who discovered sodium and potassium), Michael Faraday, James Dewar, Sir William Henry Bragg and Sir William Lawrence Bragg (who jointly won the Nobel prize for their work on x-ray diffraction), Max
H. A. Humphrey Africa. He died there in 1951. He was married to Mary Elizabeth Horniblow. They had three sons and two daughters, the bacteriologist John H. Humphrey among the former. H. A. Humphrey Herbert Alfred Humphrey MInstCE MIMechE MIEE FCGI (2 December 1868 – 9 March 1951) was a British engineer, inventor of the Humphrey pump. Humphrey was born in Gospel Oak, London. He trained at the Finsbury Technical College and the Central Institution (which later became the City and Guilds College). He patented the Humphrey pump in 1906. During World War I he worked as a chemical engineer, working on improving