"Oh, anything you like. What do you propose?" "I don't know what to say. Whatever is going to happen, apparently Zero thinks he can tackle it by himself. Still, you might have your revolver somewhere handy to-night." "I will," said Richard. Zero remained at his post until the dawn, and then came a black speck on the white road. Zero stood up and growled. The skin on his back moved. Down the road came the lean, black retriever, snapping aimlessly, foam dropping from his jaws. Zero sprang at him and was thrown down and bitten. At his second spring he got hold and kept it. The two dogs rolled off the road, and into the ditch. At breakfast, next morning, Richard was innocuously humorous on the subject of revolvers, burglars, and clairvoyant bulldogs. He was interrupted by a servant, who announced that Mr Hammond wished to speak to him for a moment. "Right," said Richard. "Where is he?" "He is just outside, sir," said the man. "Mr Hammond would not come in." Hammond was a neighbour of Richard's, a robust and heavily built man. As a rule he was a cheerful sportsman, but this morning his countenance was troubled. His clothes were covered with dust, and he looked generally dishevelled. "Hallo, Jim," said Richard cheerily. "How goes it? You look as if you'd been out all night." "I have," said Hammond grimly. "So have several other men." "Why? What's up?" "Outbreak of rabies at Barker's farm. He shot one of the dogs, but the other got away. There must have been some damned mismanagement. A lot of us have been out trying to find the brute all night." "But, by Jove, this is most awfully serious. Can't I help? I'm ready to start now if you like." "Thanks, but I found the dog five minutes ago--dead in a ditch not twenty yards from your gate. He's there still." "Who shot him?" "Nobody. That's the trouble. He had been killed by another dog, as you'll see when you look at his windpipe. The chances are the other dog got bitten or scratched, and he'll carry on the infection. It's the other dog we've got to hunt." "Could it be--" Richard paused. "I'm afraid so," said Hammond. "Not many dogs would tackle a mad retriever, but your bulldog would. And it was close to your gate that the retriever was killed." "If you'll wait half a minute, I'll see where Zero is." But the dog was not to be found. Nobody had seen him that morning. In truth, Richard had not expected to find him. He left word that if the dog came back he was to be shut up in an empty stable. And then he and Hammond went out together. "You've got a revolver, I suppose," said Richard. "I don't hunt mad dogs without one. This is most awfully hard lines on you, Richard. He was a ripping good dog, Zero was." "He was. It's Dick I'm thinking about. The dog was a great pal of his."