But this man went on laughing and talking, while at every step the stone became more firmly wedged between my shoe and the frog of my foot. The stone was sharp on the inside and round on the outside, which, as every one knows, is the most dangerous kind that a horse can pick up, at the same time cutting his foot and making him most liable to stumble and fall.
Whether the man was partly blind or only very careless I can't say, but he drove me with that stone in my foot for a good half-mile before he saw anything.