Notes on and a drawing of the original culture plate of the fungus Penicillium notatum , made by the Scottish bacteriologist Sir Alexander Fleming whilst working at St. Mary's Hospital, Paddington, London. Fleming discovered in 1928 that secretions from Penicillium notatum destroyed colonies of the bacterium Staphylococcus sp. The secretion was named an antibiotic. Clinical trials & the commercial production of antibiotics did not occur until the Second World War. Fleming was born on August 6th 1881 and died on March 11th 1955.