"You don't what?—oh, I remember," returned Mr. Jack, a quick change coming to his face.

"Yes, the sundial, you know, where my Lady of the Roses lives."

"Jack, what is a sundial?" broke in Jill eagerly.

Jack turned, as if in relief.

"Hullo, girlie, you there?—and so still all this time? Ask David. He'll tell you what a sundial is. Suppose, anyhow, that you two go out on the piazza now. I've got—er-some work to do. And the sun itself is out; see?—through the trees there. It came out just to say 'good-night,' I'm sure. Run along, quick!" And he playfully drove them from the room.

Alone, he turned and sat down at his desk. His work was before him, but he did not do it. His eyes were out of the window on the golden tops of the towers of Sunnycrest. Motionless, he watched them until they turned gray-white in the twilight. Then he picked up his pencil and began to write feverishly. He went to the window, however, as David stepped off the veranda, and called merrily:—

"Remember, boy, that when there's another note that baffles me, I'm going to send for you."

"He's coming anyhow. I asked him," announced Jill.

And David laughed back a happy "Of course I am!"