Four girls were walking down an elm-shaded street. Four girls, walking two by two, their arms waist-encircling, their voices mingling in rapid talk, punctuated with rippling laughter-and, now and then, as their happy spirits fairly bubbled and overflowed, breaking into a few waltz steps to the melody of a dreamy song hummed by one of their number. The sun, shining through the trees, cast patches of golden light on the stone sidewalk, and, as the girls passed from sunshine to shadow, they made a bright, and sometimes a dimmer, picture on the street, whereon were other groups of maidens. For school was out. "Betty Nelson, the idea is perfectly splendid!" exclaimed the tallest of the quartette; a stately, fair girl with wonderful braids of hair on which the sunshine seemed to like to linger. "And it will be such a relief from the ordinary way of doing things," added the companion of the one who thus paid a compliment to her chum just in advance of her. "I detest monotony!" "If only too many things don't happen to us!" This somewhat timid observation came from the quietest of the four-she who was walking with the one addressed as Betty. "Why, Amy Stonington!" cried the girl who had first spoken, as she tossed her head to get a rebellious lock of hair out of her dark eyes. "The very idea! We want things to happen; don't we, Betty?" and she caught the arm of one who seemed to be the leader, and whirled her about to look into her face. "Answer me!" she commanded. "Don't we?"