After the adventure of Peter's Coal-mine, it seemed well to the children to keep away from the station--but they did not, they could not, keep away from the railway. They had lived all their lives in a street where cabs and omnibuses rumbled by at all hours, and the carts of butchers and bakers and candlestick makers (I never saw a candlestick-maker's cart; did you?) might occur at any moment. Here in the deep silence of the sleeping country the only things that went by were the trains. They seemed to be all that was left to link the children to the old life that had once been theirs. Straight down the hill in front of Three Chimneys the daily passage of their six feet began to mark a path across the crisp, short turf. They began to know the hours when certain trains passed, and they gave names to them. The 9.15 up was called the Green Dragon. The 10.7 down was the Worm of Wantley. The midnight town express, whose shrieking rush they sometimes woke from their dreams to hear, was the Fearsome Fly-by-night. Peter got up once, in chill starshine, and, peeping at it through his curtains, named it on the spot. It was by the Green Dragon that the old gentleman travelled. He was a very nice-looking old gentleman, and he looked as if he were nice, too, which is not at all the same thing. He had a fresh-coloured, clean-shaven face and white hair, and he wore rather odd-shaped collars and a top-hat that wasn't exactly the same kind as other people's. Of course the children didn't see all this at first. In fact the first thing they noticed about the old gentleman was his hand. It was one morning as they sat on the fence waiting for the Green Dragon, which was three and a quarter minutes late by Peter's Waterbury watch that he had had given him on his last birthday. “The Green Dragon's going where Father is,” said Phyllis; “if it were a really real dragon, we could stop it and ask it to take our love to Father.” “Dragons don't carry people's love,” said Peter; “they'd be above it.” “Yes, they do, if you tame them thoroughly first. They fetch and carry like pet spaniels,” said Phyllis, “and feed out of your hand. I wonder why Father never writes to us.” “Mother says he's been too busy,” said Bobbie; “but he'll write soon, she says.” “I say,” Phyllis suggested, “let's all wave to the Green Dragon as it goes by. If it's a magic dragon, it'll understand and take our loves to Father. And if it isn't, three waves aren't much. We shall never miss them.” So when the Green Dragon tore shrieking out of the mouth of its dark lair, which was the tunnel, all three children stood on the railing and waved their pocket-handkerchiefs without stopping to think whether they were clean handkerchiefs or the reverse. They were, as a matter of fact, very much the reverse. And out of a first-class carriage a hand waved back. A quite clean hand. It held a newspaper. It was the old gentleman's hand.