and moving staircase. I will not pursue the further result of the thought.

Another time I was sitting in a carriage, and on my lap an object in shape like a top-hat, which, however, was made of transparent glass. The scene at once brought to my mind the proverb: “He who keeps his hat in his hand will travel safely through the land.” By a slight turn the glass hat reminded me of Auer's light, and I knew that I was about to invent something which was to make me as rich and independent as his invention had made my countryman, Dr. Auer, of Welsbach; then I should be able to travel instead of remaining in Vienna. In the dream I was traveling with my invention, with the, it is true, rather awkward glass top-hat. The dream work is peculiarly adept at representing two contradictory conceptions by means of the same mixed image.