"You can question me to-morrow. Please obey me now. I am your doctor. I will ring the bell. Yvette will come, and you will at once go out of the room, find another servant, and retire to bed. You can do that? You are not faint?"

"No, I can do it; but it is very queer."

I rang the bell.

"You have said that before, and I say, 'It is queer; queerer than you imagine.' One thing I must ask you before you go. When you had the attack in the theatre did you see things double?"

"Yes," she answered. "But how did you know? I felt as though I was intoxicated; but I had taken nothing whatever."

"Excuse me, you had taken egg-and-milk. Here is the glass out of which you drank it." I picked up the glass, which had been left on the table, and which still contained about a spoonful of egg-and-milk.

Yvette entered in response to my summons.

"Mademoiselle has returned soon," the girl began lightly.

"Yes."

The two women looked at each other. I hastened to the door, and held it open for Rosa to pass out. She did so. I closed the door, and put my back against it. The glass I still held in my hand.