"Then I turned and looked at old Peter, and he looked at me,
nodding his head.

"'Let's get out of here!' I said. 'It's no place for any living human to
enter, without proper protection.'

"We went out then, and I locked and sealed the door, again.

"After breakfast, I developed the negative; but it showed only the door
of the Grey Room, half opened. Then I left the house, as I wanted to get
certain matters and implements that might be necessary to life; perhaps
to the spirit; for I intended to spend the coming night in the Grey Room.

"I go back in a cab, about half-past five, with my apparatus, and this,
Peter and I carried up to the Grey Room, where I piled it carefully in
the center of the floor. When everything was in the room, including a cat
which I had brought, I locked and sealed the door, and went toward the
bedroom, telling Peter I should not be down for dinner. He said, 'Yes,
sir,' and went downstairs, thinking that I was going to turn in, which
was what I wanted him to believe, as I knew he would have worried both me
and himself, if he had known what I intended.

"But I merely got my camera and flashlight from my bedroom, and hurried
back to the Grey Room. I locked and sealed myself in, and set to work,
for I had a lot to do before it got dark.

"First, I cleared away all the ribbons across the floor; then I carried
the cat--still fastened in its basket--over toward the far wall, and left
it. I returned then to the center of the room, and measured out a space
twenty-one feet in diameter, which I swept with a 'broom of hyssop.'