"Come along! Come right along!" shouted the "barker," or man who was booming the attraction. "This way for the greatest sensation outside of flying! Step this way--everybody! You pays your money and you gets a good wash! Satisfaction guaranteed. The servant problem solved. Here you are, young ladies and gentlemen--right this way!" and he looked at our friends in a humorous manner. "Hear that?" called Jack. "He has us spotted, all right. He knows we need it, maybe. I'm going in first." "That's the way to talk," commented the barker. "You'll never regret it, my friend. Step this way to the ticket office. Remember, ladies and gentlemen," he went on, in louder tones, "this is the only human washing machine on the beach. There are washing machines run by human beings but this is absolutely and without doubt the only self-regulated, double acting, six cylinder, four speeds forward and reverse machine, that washes human beings in the short space of ten minutes--one sixth of an hour--six hundred seconds, and I say that without fear of successful contradiction. This way--everybody!" "Here goes," went on Jack, as he purchased a number of tickets from a roll unwound by a woman in a little cage of an office. "I'll try it first, and if I survive the bleaching process the rest of you can come in." "Oh!" cried Bess. "I'll never, never do it!" "Me, either," added Belle. "Wait until we see what it is," suggested Cora. "It may be great fun, and, as long as it's not vulgar I'm going in, if Jack says it's all right." "Come one, come all!" the barker could be heard droning. The party of boys and girls went into the place, and found themselves in the midst of an excited and jolly crowd. Some had been washed, others needed washing, some wanted washing, and others desired it, but feared to undertake the ordeal. "Good-bye!" called Jack, gaily, as he walked along a narrow passage, protected by a railing on either side, for an attendant directed there all who wanted to indulge in the new sensation. "Hold on!" cried Ed and Walter. "We're coming, too!" "Get a hustle on," ordered Jack. "The water is just right now." The girls stood where they could watch the process. Suddenly Jack and his chums could be seen bobbing up and down, as if they were in a boat on a choppy sea, and then the girls noticed that the lads were on a sort of endless, moving sidewalk, that did all sorts of queer "stunts" while, underneath, water rushed and bubbled along, seemingly all about the boys, but never touching them. "You are now in the tub of soapy water," announced a man who was evidently there for that purpose. "You are getting the first layer of contamination off." Faster and faster went the moving, endless sidewalk. It surged up and down, and from side to side. The boys were laughing and joking, and they had to cling to the railing to maintain their footing. "This is great!" cried Jack. "All to the la-la!" added Ed.