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
Humphrey Morrey Humphrey Morrey Humphrey Morrey, or Murrey (1716) was the first Mayor of Philadelphia under William Penn's 1691 charter. He was not elected, but rather was appointed by Penn. He was ancestor of the singer, actor, and political activist Paul Robeson. Morrey was one of the 15 founders of Cheltenham Township, Pennsylvania. Morrey first came to Philadelphia in 1683 and worked as a merchant. In 1685, he was appointed a justice of the peace. In 1687, and again in 1690, he was chosen to the provincial assembly. In the charter of March 20, 1691, by which Philadelphia was incorporated as a