Specimen

Preserved specimens of 'Penicillium notatum' (penicillin mould) (2), from the laboratories of Howard W. Florey, Oxford, England, 1944. Preserved specimens of 'Penicillium notatum', the mould that makes penicillin, at different stages of growth. These were given to Dr Rohan de Royal Barondes of the United States Medical Corps on a visit to Howard W. Florey's laboratories in Oxford in 1944. Each of the two specimens is in a sealed glass Petri dish, the lid of one being inscribed in black ink 'P.notatum', the lid of the other being inscribed in white ink 'P.notatum/ 4 days'. The Petri dishes had been arranged in a cardboard mount, apparently by Barondes, along with a third specimen. The third specimen was, however, sent by the vendor to the United States National Museum of Health.