_everyday thoughts_—names, for instance—are excerpts from, or vestiges of, previous conscious experiences of which we have no recollection, that is to say, they are memories, reproductions of formerly experienced ideas. In the absence of recollection they seem to belong only to the present. Memories which hold an intermediate place between these automatic memories and those of true recollection are certain memories, like the alphabet or a verse or phrase once learned by heart which we are able at best to localize only dimly in the past. Indeed, the greater part of our _vocabulary_ is but conscious memory without localization in the past. So we see that recollection is not an essential even for conscious memories. It is only a particular phase of memory just as are automatic conscious memories. ----- Footnote 54: I use this term physical in the sense in which it is used in the physical sciences without reference to any metaphysical concept or the ultimate nature of matter or of a physical process. Footnote 55: The psyche would have to be one which would be capable of becoming differentiated at one and the same moment into two independent consciousnesses—the personal and the secondary; a soul split into two, so to speak. The desire to explain a secondary consciousness by this doctrine has probably given rise to the popular notion of two souls in a single body! Footnote 56: If the theory of the unconscious presented in these lectures be firmly established this doctrine will have to be modified to this extent, that, while all mental processes are accompanied by brain processes, brain processes that ordinarily have conscious equivalents can within certain limits occur without them and exhibit all the characteristics of intelligence—unconscious cerebration. _Indeed, it becomes probable that every mental process is a part of a larger mechanism in which unconscious brain processes not correlated with the specifically conscious processes are integral factors._ Footnote 57: Dr. S. J. Meltzer has pointed out in a very suggestive article (_Journal American Medical Association_, Vol. IV, No. 12) that the anaphylactic attack resembles that of bronchial asthma in man, and argues that this latter disease may be the same phenomenon. Footnote 58: T. Brailsford Robertson: Sur la Dynamique chimique du système nerveux central, Archiv. de Physiol. v. 6, 1908, p. 388. Ueber die Wirkung von Säuren auf das Athmungs Zentrum, Arch. f. die Gesammte Physiologie, Bd. 145, Hft. 5 u. 6, 1912. Footnote 59: Stéphane Leduc: The Mechanism of Life. Footnote 60: Further studies in the chemical dynamics of the central nervous system, Folio Neuro-Biologica, Bd. VI, Nos. 7 and 8, 1912. Footnote 61: Eugenio Rignano: Upon the Inheritance of Acquired Characters. Trans. by Basil C. H. Harvey, Chicago. Open Court Publishing Co., 1911. Footnote 62: