An exploration of the practice of medicine in nineteenth-century Prince Edward Island through one doctor’s records. Dr John Mackieson practised medicine in Prince Edward Island from 1821 to 1885. Island Doctor offers an intimate look at the work of this "ordinary" physician and a fascinating glimpse of medicine in the nineteenth century. Based on a study of two casebooks, which include Dr Mackieson’s records for 257 patients with a variety of illnesses seen from 1826 to 1858 and 115 patients with mental illness seen from 1868 to 1874, two manuscripts, and a diary, David Shephard illustrates the wide variety of representative cases in Dr Mackieson’s career and situates his work in the context of medical practice at the time.