In English-speaking countries of course we are interested in what was done by Englishmen at this time. Fortunately we have the record of one great English surgeon of the period worthy to be placed beside even the writers already mentioned. This is John Ardern, whose name is probably a modification of the more familiar Arden, whose career well deserves attention. I have given a sketch of his work in "The Popes and Science."[22] He was educated at Montpellier, and practised surgery for a time in France. About the middle of the century however, according to Pagel, he went back to his native land and settled for some twenty years at Newark, in Nottinghamshire, and then for nearly thirty years longer, until about the end of the century, was in London. He is the chief representative of English surgery during the Middle Ages. His "Practica," as yet unprinted, contains, according to Pagel, a short sketch of internal medicine, but is mainly devoted to surgery. Contrary to the usual impression with regard to works in medicine and surgery at this time, the book abounds in references to case histories which Ardern had gathered, partly from his own and partly from others' experience. The therapeutic measures that he suggests are usually very simple, in the majority of cases quite rational, though, of course, there are many superstitions among them; but Ardern always furnished a number of suggestions from which to choose. He must have been an expert operator, and had excellent success in the treatment of diseases of the rectum. He seems to have been the first operator who made careful statistics of his cases, and was quite as proud as any modern surgeon of the large numbers that he had operated on, which he gives very exactly. He was the inventor of a new clyster apparatus.