I On an evening in the latter part of May a middle-aged man was walking homeward from Shaston to the village of Marlott, in the adjoining Vale of Blakemore or Blackmoor. The pair of legs that carried him were rickety, and there was a bias in his gait which inclined him somewhat to the left of a straight line. He occasionally gave a smart nod, as if in confirmation of some opinion, though he was not thinking of anything in particular