The president of the League looked inquiringly at his mainstay, the silent Bob, and, in answer to his unspoken question, the other nodded. "We could try it, of course, if you wanted us to," agreed Ross. "Ain't I asking you to?" said their visitor, sharply. "But suppose we don't get it just right?" Ross queried. "That's the chance I'm taking," the farmer replied. "But there's no doubt that you know a lot more about it than I do, and your guess is likely to be nearer than mine. Those potatoes have just got to go to Chicago some time next week, anyway." "It's a new stunt for the League," said Ross again, hesitating, but the editor-in-chief broke in impatiently. "We might as well tell what we know," he said. "We do know that there's a cold wave on the way." "There is? How cold?" the farmer asked, with a sudden quickening of interest. "Cold enough to freeze potatoes, at any rate," assured Fred. "I was looking at the Weather Map only about an hour ago. Oh, it's going to be cold, all right." "How do you know?" Jed Tighe demanded. "If I'm goin' to act on what you boys say, I'd like to know how you find out." "I've been wondering," put in Anton thoughtfully, "if it wouldn't be a good idea to have Mr. Tighe go over the map with us. He might be interested in figuring it out, and then if we didn't hit it just right, he'd know we'd done our best, anyway." "Well," rejoined the farmer grimly, "if I've got to hand you over some of my crop this fall, I might as well find out what sort of project I'm supporting. I really would like to see how you find out. You boys certainly made good on that frost business the other night." From a hook over the compositor's "case," Fred reached down a sheaf of the Daily Weather Reports, and laid those for the last three days on the table in front of Anton. The Forecaster stood by to help the crippled lad and to correct him if he made any mistakes in his explanations. "All our weather in the United States," the boy began, explanatorily, "comes from the west." "Why?" snapped back Jed Tighe. The Forecaster smiled. He realized that the question went to the very root of weather knowledge. The query was a poser to Anton. He stammered. "I know it does," he said, "but just why, I--I--" "You'll have to begin at the beginning, Anton," put in the Forecaster quietly. "If Mr. Tighe really wants to know, you can't take anything for granted. Explain to him the circulation of the atmosphere, just the way I taught it to you during the winter." The crippled lad's face brightened. He knew, now, how to proceed. "All changes of weather, Mr. Tighe," he said, "happen because of the winds, and all the changes of winds are due to the differences in heat at various parts of the globe, especially at the equator, where it is always hot, and at the poles, where it is cold nearly all the year round." "You mean to say that the weather at the North Pole and at the equator has anything to do with our weather here?"