us for an entire day, lies hidden behind this recent recollection. The intimacy, the hand resting upon the knee, refers to a quite different connection and to quite other persons. This element in the dream becomes again the starting-point of two distinct series of reminiscences, and so on.

The stuff of the dream thoughts which has been accumulated for the formation of the dream scene must be naturally fit for this application. There must be one or more common factors. The dream work proceeds like Francis Galton with his family photographs. The different elements are put one on top of the other; what is common to the composite picture stands out clearly, the opposing details cancel each other.

This process of reproduction partly explains the wavering statements, of a peculiar vagueness,