"'If there are any clouds, they seem to be generally light yellow to begin with, changing to pink and rose, then red and dark orange. I couldn't find any system in the color of the clouds, perhaps because they are at different heights. "'A few times I've seen a sort of second faint purple arch or bow in the east, but by that time it's dark. In the west, though, the second arch is quite clear. As the first western purple arch sinks to the horizon, following the sun, a green stretch, ever so green, shows up, and above it is a second arch of bright light, with a purple arch above that. When this last one sinks, it is quite dark.'" Mr. Levin, as was his habit on Saturday afternoon, had come over to the League's club-house, and he had entered during the reading, followed by his usual bevy of boys; Rex, Lassie, and four roly-poly puppies, now able to run around on unsteady legs, bringing up the rear. "That's a mighty accurate description of sunset colors," the Forecaster commented; "whoever did that, deserves a lot of credit. Hello! Have you enlarged your staff, Fred?" he continued, as he noted the printer and realized, at a glance, that the little shed had already assumed a more business-like look. The editor-in-chief explained the bargain he had made and the Weather Man nodded his head approvingly. "That's the best way I know to spend your savings," he said, "using them to learn something. I'm glad you're going to have this issue properly printed, too, because that sunset article is about the best you've had, so far. If I don't miss my guess, a good many people will keep that number as a sort of reference for the colors of sunset. Who wrote it?" "I did, sir," said one of the boys who had come in with him. "Good work," the Forecaster commented. "Do you happen to know, though, Bert, what makes the colors of sunset? Why doesn't it just gradually get dark as the sun goes down?" "I don't know," the boy replied. "I tried to explain it the other day and I found I hadn't the least idea why, myself. I asked Father, but he didn't know either." "Yet it's quite simple," the Weather Man answered, "and if you boys are going to be real meteorologists, you ought to know the reasons for things. First of all, why is the sky blue?" There was a gasp of astonishment, followed by silence. "Sure, 'tis the air that's blue," hazarded the printer. "That doesn't help much," the Forecaster said, "though perhaps it does, a little. Why is the air blue?" The Irishman shook his head. "Why is annything blue?" he asked. "That's just what I'm going to tell you," the Weather Man answered, "and you want to listen carefully, boys, because the colors of the sunset depend a great deal on the weather. You can foretell weather from the sunset." "Yo' sho' can," interrupted Dan'l. "Don't yo' remember Mammy's old rhyme: "Evenin' red an' mornin' gray Certain signs of a beautiful day; Evenin' gray an' mornin' red, Sends a nigger wet to bed."