"It wasn't a shadow," remarked David, "because I distinctly saw a black shadow following the thing, whatever it was; and if it had been a shadow it certainly wouldn't have cast a shadow, would it?"

The boys stood at the window for half an hour looking for another visitation of the spook or ghost, or whatever it was, but the field appeared to be deserted. There was only the moonlight on the grass, the black shadows and the katydids calling mournfully to each other the old, old refrain. Then Lewis and Jimmy made their departure, the former keeping very close to Jimmy as they headed for their own room. Unconsciously they quickened their steps and occasionally looked fearfully over their shoulders, and on reaching their entry made a break for their room, three steps at a leap.

A little while after Jimmy and Lewis had made their hasty exit to the other end of Warren Hall, Gleason came sauntering up the stairs, and into the room.

"This is our new room-mate, David Powers," said Frank. David and Gleason shook hands.

"Glad to see you," said the Codfish. "Hope you and Web-foot won't get lost in that big room of yours—what's the matter with the both of you?—you look as if you had seen a ghost."

"That's just what we did do."

"Get out, where?"

"Right down there on the meadow."

"Go to bed and have a little sleep, and you'll get over it all right. You're studying too hard."

"I saw it too," chimed David. "There were four of us and we saw it plain as day."