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-fulfilment. 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,40 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 assigned to the inner organic sensations which are wont to be taken as the cardinal point in the explanation of the dream. These—the sensation of falling, flying, or inhibition—stand as an ever ready material to be used by the dream-work to express the dream thought as often as need arises.
That the dream process is a rapid and momentary one seems to be true for the perception through consciousness of the already prepared dream content; the preceding parts of the dream process probably take a slow, fluctuating course. We have solved the riddle of the superabundant dream content compressed within the briefest moment by explaining that this is due to the appropriation of almost fully formed structures from the psychic life. That the dream is disfigured and distorted by memory we found to be correct, but not troublesome, as this is only the last manifest operation in the work of disfigurement which has been active from the beginning of the dream-work. In the bitter and seemingly irreconcilable controversy as to whether the psychic life sleeps at night or can make the same use of all its capabilities as during the day, we have been able to agree with both sides, though not fully with either. We have found proof that the dream thoughts represent a most complicated intellectual activity, employing almost every means furnished by the psychic apparatus; still it cannot be denied that these dream thoughts have originated during the day, and it is indispensable to assume that there is a sleeping state of the psychic life. Thus, even the theory of partial sleep has come into play; but the characteristics of the sleeping state have been found not in the dilapidation of the psychic connections but in the cessation of the psychic system dominating the day, arising from its
