"I shall be your master, not your pupil."

"These are early days to adopt such a tone, sir."

"You might both be in your teens," I observed. And they laughed as happily as though they were.

A hammering at the drawing-room window attracted our attention.

"It's Dimbie," I explained. "You see, he is a little cross. He went to look up something for me in the encyclopædia, and I told Amelia to lock him in. I was afraid he might worry you, and perhaps follow you about."

"Do you mean to say he knew——" Jane broke off, turning a vivid scarlet.

What was I to say? Here was a pretty dilemma.

"I let it out the other day," said the Doctor bravely.

"Did you know when you invited me here?" Her eyes were full of fire, but her voice was quiet.

"No," I said triumphantly, "not a word. And Dr. Renton didn't exactly tell me; I found out. He was here when your telegram came."