into the same relation to the dream-wish as the thought remnants from the waking activity. There was no need of disputing the fact that the dream interprets the objective sensory stimuli after the manner of an illusion; but we have supplied the motive for this interpretation which has been left undecided by the authorities. The interpretation follows in such a manner that the perceived object is rendered harmless as a sleep disturber and becomes available for the wish-fulfillment.

Though we do not admit as special sources of the dream the subjective state of excitement of the sensory organs during sleep, which seems to have been demonstrated by Trumbull Ladd, we are nevertheless able to explain this excitement through the regressive revival of active memories behind the dream. A modest part in our conception has also been