It certainly did, in a thick white cloud. Madame Marie stood over it, letting the odour flow into her nostrils. Not wishing to experience the power of the herb, as he had witnessed its results before, Prelice lay full length on the red carpet. The smoke was circling so high up that he could not breathe it, although a sickly whiff of tuberose perfume came to his nostrils. Perhaps the draught sweeping from under the door neutralised the powerful scent at this lower level; but be this as it may, Prelice lay perfectly flat, and, as in a dream, heard Madame Marie speak after the manner of the tranced in an unemotional voice, and very distinctly.

"I leave this room," she said in her mellow tones. "I rise high. I pass across London; the streets are under me. I see the Park, and now I poise above Alexander Mansions. I sink; I pass through the roof; I am in Mrs. Rover's flat."

"Search for the dress," commanded Prelice softly.

There was a pause, and then the calm voice sounded again. "I search in Mrs. Rover's room. The dress she wore is there in a wardrobe together with a green domino."

"Search for another dress," said Prelice, risking the chance; "another dress of the same style."

Again there came a pause. "I am searching!" said the voice, and a silence ensued. For quite two minutes it endured; then Madame spoke again, still with the same awful calmness. "A man's dressing-room—in the flat across the landing. I see a cupboard, in which many clothes are hanging up. Men's clothes they are. Behind them is a green domino with a scarlet-embroidered dress sewn to it."

"Who wore it?" asked Prelice, his heart beating.

"I cannot tell. It is not permitted by the Powers."

Then came a long silence.

[CHAPTER XIX.]