As a medical student in Scotland , Doyle had a Professor named Doctor Bell, who was well known for his ability to see minute things on a patient, that lead him to a diagnosis. Bell was a leader in the concept of carefully examining the entire body of the patient to see things that others would miss. Bell was ( I think ) the model for the careful examinations performed by Holmes. A tangent.....Justice Bigelow, of the Ontario Court of Queen's Bench ( in the 1950's ) one of the world's leading authorities on Holmes., Recently his book ( a private publication of only 100 copies ) was listed for sale at $13,000 USD. Bigelow was also the long time Chairman of the Ontario Jockey Club which rules the horse racing tracks in Ontario. Bigelow was known far and wide for his strict court room rules. He once told a lawyer to go home and change his orange and blue argyle socks, for ones of a solid black material. Cranky as hell, but a superior Justice, too. JimB.