Sir Alexander Ogston MD CM LLD (19 April 1844 – 1 February 1929) was a British surgeon, famous for his discovery of Staphylococcus. Life Ogston was the eldest son of Amelia Cadenhead and her husband Prof. Francis Ogston (1803–1887), Professor of Medical Jurisprudence at the University of Aberdeen. He had a brother who was also a professor. University of Aberdeen Ogston began his medical training at Marischal College in 1862 and graduated as Bachelor of Medicine and Master of Surgery at the recently united University of Aberdeen in 1865 with honours in medicine and surgery at the age of 21. He obtained his MD a year later in 1866. He was appointed as a full surgeon to the Aberdeen Royal Infirmary in 1874. He was Assistant Professor of Medical Jurisprudence and Materia Medica, Lecturer in Ophthalmology and Anaesthetist before being appointed as Regius Professor of Surgery in 1882. He is credited with the introduction of carbolic spray to Aberdeen. Staphylococcus Ogston was reported to have called on Joseph Lister and rigorously followed his antiseptic principles. These are aptly phrased in a small ditty composed by his students. The spray, the spray, the antiseptic spray A.O. would shower it morning, night and day For every sort of scratch Where others would attach A sticking plaster patch He gave the spray. Ogston followed the work of other contemporaries such as Koch, J.C. Ewart from Edinburgh (published on different types of bacteria), and Kohler from Berne (who found bacteria in cases of osteomyelitis and 'strumitis'. Following his examination of the organisms from the abscess of James Davidson, Ogston used the shed behind his house as a laboratory (receiving a grant (£50) from the British Medical Association (BMA), with which he purchased a Zeiss microscope and the methyl-aniline dye used by Koch) to continue his research. Following Kochs postulates and staining methods, Ogston set about isolating the causative organism of Davidson's wound. By experiment Ogston concluded that the optimal conditions for cultivation of this organism were hen's egg medium grown in small bottles shielded from contamination by glass 'shades. Using samples from 82 abscesses, Ogston successfully isolated bacteria from 65 samples, the others being referred to as "cold". He was then able to transfer pure colonies to guinea-pigs, white mice or wild mice. Ogston soon realised there were '"two forms of micrococcus: one in the form of chains or necklaces to which the name