“Do you observe,” said Holmes, “that the rider is now undoubtedly forcing the pace? There can be no doubt of it. Look at this impression, where you get both tyres clear. The one is as deep as the other. That can only mean that the rider is throwing his weight on to the handle-bar, as a man does when he is sprinting. By Jove! he has had a fall.” There was a broad, irregular smudge covering some yards of the track. Then there were a few footmarks, and the tyre reappeared once more.
