Third; _the coconscious figures in the calculation experiments do not constitute the whole of the process_. They would seem to be the product of some deeper underlying process. The figures “kept coming and going” and seemed to “add themselves.” There was no conscious process that related the figures to one another and determined whether the problem was one of addition or multiplication—as is the case when we do a calculation consciously; that is to say, of course, if the hypnotic personality remembered the whole of the conscious calculation. It was more as if there was an underlying unconscious process which did the calculation, certain final results of which appeared as dissociated states of consciousness, i.e., figures which did not enter the personal consciousness. The process reminds us of the printing of visible letters by the concealed works of a typewriter; or of visible letters of an electrically illuminated sign appearing and disappearing according as the concealed mechanism is worked. This interpretation is in entire accord with the spontaneous occurrence of the coconscious images during the everyday life of these subjects. These images were pictorial representations of antecedent thoughts and seemed to be the products or elements of these thoughts apparently functioning as underlying unconscious processes. Likewise, in post-hypnotic suggested actions, I have not been able to obtain memories of coconscious thoughts directing the actions, but only the images described. These behave as if they were the product of another underlying process determining the action. Inferences of this sort are as compulsory as the inference that the illumination of a sensitive plate observed in the study of radio-activity must be due to the bombardment of the plate by invisible particles emitted by the radio-active substance. These particles and the process which ejects them can only be inferred from the effects which they produce. So, in the above observations, it would seem as if the coconscious figures, and other images involved, must be ejected as conscious phenomena by an underlying process. There is no explicit evidence that this is conscious.