“Or—whistle,” he said jestingly.

Cora walked down the stone steps. She hesitated and listened. There was not a sound amid the leaves, through which the figure had just disappeared.

“I declare!” she said, “I feel creepy. I guess I had better go to bed. I have had enough of ghosts for one night.”

Jack went with her up the stairs and left her at the door of the room she was to occupy. But he did not go farther down the hall, to the big room in the alcove, where he and his chums were to sleep, although he noticed that blades of light were escaping under the door which meant, of course, that Ed and Walter were waiting up for him.

“I’ll just take another look for that specter,” he told himself, going down the stairs noiselessly. “I rather think he, she, or it, had something to say either to me or Cora.”

It was a curious thought, and Jack could not account for it, but he actually did make directly for the hedge where the streaks of moonlight fell, like silvery showers on the dark green foliage. A narrow path was outlined by a low hedge. He walked down this dark aisle, peering into the banks of green at either side.

“Who’s that?” he asked, as he distinctly heard a rustle, and at the same time saw the branches move.

No answer.

“Is there any one there?” he demanded, this time more emphatically.

Still no answer came.