Twink glanced at the clock on the mantle. It was a little Dutch cottage clock and the hands indicated it was almost three o'clock. Twink was struck with a sudden idea. "Come on, Tom!" she called. "Look at the time. If we don't hurry we'll miss Chapter Four of Buffalo Bill Rides Again!" Tom came to life immediately, and in an instant both children were dashing down the broad stairway and into the library. Here was the solution to their dull afternoon--a television set that Professor Jones had built himself and installed in the library. It was a very special set with a large "projection screen." The glass tube of the television set enlarged the picture on the screen. At three o'clock each afternoon Twink and Tom could see another chapter in the exciting moving picture serial of the wild west. The children were sure, of course, that Buffalo Bill had been named after their own city, and this made the picture all the more interesting. Tom was busily turning knobs and dials and making adjustments. In a few seconds the big screen lighted up with a bluish-green glare and a moment later the pictures appeared. Buffalo Bill was ambushed by a wildly howling mob of Redskins who were on the war-path. There was no doubt in Twink's and Tom's minds that the famous scout would emerge unharmed while the Indians would take to noisy flight. But just as Buffalo Bill brought his rifle to his shoulder and was sighting the nearest Redskin, something happened. The flickering motion picture vanished from the television screen, and in its place appeared a picture that made the children gasp. It was one of the most beautiful scenes they could imagine: a peaceful, rolling meadowland, bright with all kinds of wild-flowers on which the sun shown down from a blue sky dotted with white, baby clouds. In the distance rose the spires and minarets of a great castle, glittering and glistening in the sunlight. But it was not the castle or the sunny meadowland that held the children's attention. Twink and Tom stared unbelievingly at a figure that stood in the center of the television picture looking out at them with the most familiar of smiles. It was Twoffle, their wooden clown. CHAPTER 2 On the Isle of Conjo "Good afternoon, children," said the clown quite clearly and calmly. "G-g-g-good afternoon!" stammered Twink and Tom. The little clown suddenly doubled up with merriment and then gasped: "If you could only see yourselves! You're all eyes--positively bug-eyed if I ever saw anyone who was!" "But what are you doing in the television picture?" asked Twink, regaining a little of her composure. The clown disregarded her question and was suddenly serious. "Come on," he ordered. "Conjo can hold this picture only a few minutes and you just have time to walk through." "Walk through?" echoed Tom. "What do you mean?"