THE death on March 29 of Ernest Hanbury Hankin at the age of seventy-four years removes one who hi the early days of the development of bacteriology did much to forward its practical applications. The son of a clergyman, he was educated at Merchant Taylors' School, at University College, London, and at St. John's College, Cambridge, of which he was a scholar and later a fellow, obtaining the M.A. and Sc.D. degrees. He also studied at St. Bartholomew's Hospital for a time, but did not proceed to a medical qualification, and worked in Koch's laboratory in Berlin and hi the Pasteur Institute, Paris. He then accepted an appointment as chemical examiner, analyst and bacteriologist to the North-West Provinces and Oudh, India, and spent his professional life at Agra. Dr. Hankin's earlier researches before proceeding to India were mainly concerned with the germicidal action of proteins of blood-serum and of cells, so-called ‘alexins’, upon which he published several papers in the Proceedings of the Royal Society, Journal of Pathology and Bacteriology and Centralblatt filr Bakteriologie.