There was a brooding oppressiveness in the air that seemed to bode something.

The boys huddled themselves together and sought the friendly companionship of the fire, though the dull dead heat of the breathless atmosphere was stifling. They sat still, intent and waiting. The solemn hush continued. Beyond the light of the fire everything was swallowed up in the blackness of darkness. Presently there came a quivering glow that vaguely revealed the foliage for a moment and then vanished. By and by another came, a little stronger. Then another. Then a faint moan came sighing through the branches of the forest and the boys felt a fleeting breath upon their cheeks, and shuddered with the fancy that the Spirit of the Night had gone by. There was a pause. Now a weird flash turned night into day and showed every little grassblade,