A synoptic edition of the English version of John Arderon’s De judiciis urinarum containing the commentary on Giles of Corbeil’s Carmen de urinis as preserved in Glasgow University Library, MS Hunter 328, from the early 15th century, and Manchester University Library, MS Rylands Eng. 1310, from the 16th century. The English version of De judiciis urinarum is a detailed uroscopic treatise instructing the mediaeval practitioner on the examination of urine with twenty colours and eighteen to nineteen contents, incorporating colour descriptions, diagnoses, medicines and information about...