Includes bibliographical references and index. Howard Walter Florey, Baron Florey of Adelaide OM FRS FRCP (24 September 1898 – 21 February 1968) was an Australian pharmacologist and pathologist who shared the Nobel Prize in Physiology or Medicine in 1945 with Sir Ernst Boris Chain and Sir Alexander Fleming for his role in the making of penicillin. It was Florey and his team who actually made a useful and effective drug out of penicillin, after the task had been abandoned as too difficult.

He is regarded by the Australian scientific and medical community as one of its greatest figures.