Arthur Conan Doyle 
Hound of the Baskervilles [PDF ebook] 
Another Adventure of Sherlock Holmes

Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. I think also that the probability is in favour of his being a country practitioner who does a great deal of his visiting on foot.