"But it's true," said Edmund. "Just you look where the fire burnt my hand." "I see you've been playing with fire--into mischief as usual," said the master, and he caned Edmund harder than ever. The master was ignorant and unbelieving: but I am told that some schoolmasters are not like that. Now, one day Edmund made a new lantern out of something chemical that he sneaked from the school laboratory. And with it he went exploring again to see if he could find the things that made the other sorts of noises. And in quite another part of the mountain he found a dark passage, all lined with brass, so that it was like the inside of a huge telescope, and at the very end of it he found a bright green door. There was a brass plate on the door that said MRS. D. KNOCK AND RING, and a white label that said CALL ME AT THREE. Edmund had a watch: It had been given to him on his birthday two days before, and he had not yet had time to take it to pieces and see what made it go, so it was still going. He looked at it now. It said a quarter to three. Did I tell you before what a kindhearted boy Edmund was? He sat down on the brass doorstep and waited till three o'clock. Then he knocked and rang, and there was a rattling and puffing inside. The great door flew open, and Edmund had only just time to hide behind it when out came an immense yellow dragon, who wriggled off down the brass cave like a long, rattling worm--or perhaps more like a monstrous centipede. Edmund crept slowly out and saw the dragon stretching herself on the rocks in the sun, and he crept past the great creature and tore down the hill into the town and burst into school, crying out: "There's a great dragon coming! Somebody ought to do something, or we shall all be destroyed." He was caned for untruthfulness without any delay. His master was never one for postponing a duty. "But it's true," said Edmund. "You just see if it isn't." He pointed out of the window, and everyone could see a vast yellow cloud rising up into the air above the mountain. "It's only a thunder shower," said the master, and caned Edmund more than ever. This master was not like some masters I know: He was very obstinate, and would not believe his own eyes if they told him anything different from what he had been saying before his eyes spoke. So while the master was writing _Lying is very wrong, and liars must be caned. It is all for their own good_ on the black-board for Edmund to copy out seven hundred times, Edmund sneaked out of school and ran for his life across the town to warn his granny, but she was not at home. So then he made off through the back door of the town, and raced up the hill to tell the cockatrice and ask for his help. It never occurred to him that the cockatrice might not believe him. You see, he had heard so many wonderful tales from him and had believed them all--and when you believe all a person's stories they ought to believe yours. This is only fair.