The "Twentieth" school was built of logs hewn on two sides. The cracks were chinked and filled with plaster, which had a curious habit of falling out during the summer months, no one knew how; but somehow the holes always appeared on the boys' side, and being there, were found to be most useful, for as looking out of the window was forbidden, through these holes the boys could catch glimpses of the outer world--glimpses worth catching, too, for all around stood the great forest, the playground of boys and girls during noon-hour and recesses; an enchanted land, peopled, not by fairies, elves, and other shadowy beings of fancy, but with living things, squirrels, and chipmunks, and weasels, chattering ground- hogs,