says the dream thought, if this person is grateful to me for this—­this love is not cost-free.  But love that shall cost nothing is one of the prime thoughts of the dream.  The fact that shortly before this I had had several drives with the relative in question puts the one drive with my friend in a position to recall the connection with the other person.  The indifferent impression which, by such ramifications, provokes the dream is subservient to another condition which is not true of the real source of the dream—­the impression must be a recent one, everything arising from the day of the dream.

I cannot leave the question of dream displacement without the consideration of a remarkable process in the formation of dreams in which condensation and displacement work together towards one end.  In condensation we have already considered the case where two conceptions in the dream having something in common, some point of contact, are replaced in the dream content by a mixed image, where the distinct germ corresponds to what is common, and the indistinct secondary modifications to what is distinctive.  If displacement is added to condensation, there is no formation of a mixed image, but a common mean which bears the same relationship to the individual elements as does the resultant in the parallelogram of forces to its components.  In one of my dreams, for instance, there is talk of an injection with propyl.  On first analysis I discovered an indifferent but true incident where amyl played a part as the excitant of the dream.  I cannot yet vindicate the exchange of amyl for propyl.  To the round of ideas of the same dream, however, there belongs the recollection of my first visit to Munich, when the Propyloea struck me.  The attendant circumstances of the analysis render it admissible that the influence of this second group of conceptions caused the displacement of amyl to propyl. Propyl is, so to say, the mean idea between amyl and propyloea; it got into the dream as a kind of compromise by simultaneous condensation and displacement.

The need of discovering some motive for this bewildering work of the dream is even more called for in the case of displacement than in condensation.

Although the work of displacement must be held mainly responsible if the dream thoughts are not refound or recognized in the dream content (unless the motive of the changes be guessed), it is another and milder kind of transformation which will be considered with the dream thoughts which leads to the discovery of a new but readily understood act of the dream work.  The first dream thoughts which are unravelled by analysis frequently strike one by their unusual wording.  They do not appear to be expressed in the sober form which our thinking prefers; rather are they expressed symbolically by allegories and metaphors like the figurative language of the poets.  It is not difficult to