tion of the dream content to the other factors in the dream activity. Might the procedure be as follows: the dream-creating factors, the impulse to condense, the necessity of evading the censor, and the regard for dramatic fitness in the psychic resources of the dream—these first of all create a provisional dream content, and this is then subsequently modified until it satisfies the exactions of a second instance? This is hardly probable. It is necessary rather to assume that the demands of this instance are from the very beginning lodged in one of the conditions which the dream must satisfy, and that this condition, just like those of condensation, of censorship, and of dramatic fitness, simultaneously affect the whole mass of material in the dream thoughts in an inductive and selective manner. But of the four conditions necessary for the dream formation, the one last recognised is the one whose exactions appear to be least binding upon the dream. That this psychic function, which undertakes the so-called secondary elaboration of the dream content is identical with the work of our waking thought may be inferred with great probability from the following consideration:—Our waking (foreconscious) thought behaves towards a given object of perception just exactly as the function in question behaves towards the dream content. It is natural for our waking thought to bring about order in the material of perception, to construct relationships, and to make it subject to the requirements of an intelligible coherence. Indeed, we go too far in doing this; the tricks of prestidigitators deceive us by taking advantage of this intellectual habit. In our effort to put together the sensory impressions which are offered to us in a comprehensible manner, we often commit the most bizarre errors and even distort the truth of the material we have before us. Proofs for this are too generally familiar to need more extended consideration here. We fail to see errors in a printed page because our imagination pictures the proper words. The editor of a widely-read French paper is said to have risked the wager that he could print the words "from in front" or "from behind" in every sentence of a long article without any of his readers noticing it. He won the wager. A curious example of incorrect associations years ago caught my attention in a newspaper. After the session of the French chamber,
