Add to ORKGIn 1220, while the major part of the Western physicians based their diagnonis and prognosis on the examination of urines of their patients, a practitioner named Guillelmus, native of England and citizen of Marseille, publishes a treatise with the provocative title, De urina non visa, " On Urine not seen " ; he aimed to give to his " colleagues " and fellows the means to judge the state of the patient basing themselves not on his flask of urines, but on the configuration of the sky at the time of the consultation. By this bombshell which intended to demonstrate the superiority of the astrology, Guillelmus wanted to deliver a "memorial" to the posterity, and his desire was apparently fulfilled since his book appeared among the books to be rea...