There are two modes in which these calculations may be accomplished. In a special and limited class of cases, where there is a large split-off subconscious personality, or doubling of consciousness, the calculation may be made entirely by this secondary subconscious self, in the same fashion as it would be made by the principal personality if the problem were given in the waking state. The subconscious personality will go through each conscious step in the calculation in the same way.[47] In a second class of cases the _calculations are worked out, apparently, unconsciously_, without participation in the process by a subconscious personality even when such exists. At most it would seem that isolated numbers representing different steps in the calculation arise from time to time coconsciously as a limited secondary consciousness (of which the personal consciousness is unaware) until finally the figures of the completed answer appear therein. The calculation itself appears to be still another process outside both the personal and the secondary consciousness. When the problem has been finished the answer is finally given automatically. The whole process is too complicated to go into at this time before we have studied the problems of the coconscious.[48] It is enough to say that it is plain that the hypnotic experience—the suggested problem—must be considered as some kind of specific residuum, psychological or neural, and that this residuum must be one capable of quite elaborate independent and subconscious intellectual activity before finally becoming transformed into the final answer. =Residual processes underlying dreams.=—When citing the evidence of dreams for the conservation of forgotten experiences I spoke of one type of dream as a symbolical memory. I may now add it is more than this; it is a fabrication. The original experience or thought may appear in the dream after being worked over into a fantasy, allegory, symbolism, or other product of imagination. Such a dream is not a recurrent phase of consciousness, but a _newly fabricated phase_. Further, analytical and experimental researches go to show that the fabrication is performed by the original phase without the latter recurring in the content of the personal consciousness. The original phase must therefore have been conserved in some form capable of such independent and specific functioning, i.e., fabrication below the threshold of consciousness. For instance: