Now that we are able, by applying our process of interpretation, to discover a _latent_ dream content which far surpasses the _manifest_ dream content in point of significance, we are impelled to take up the individual dream problems afresh, in order to see whether the riddles and contradictions which seemed, when we had only the manifest content, beyond our reach may not be solved for us satisfactorily. The statements of the authors concerning the relation of the dream to waking life, as well as concerning the source of the dream material, have been given at length in the introductory chapter. We may recall that there are three peculiarities of recollection in the dreams, which have been often remarked but never explained: 1. That the dream distinctly prefers impressions of the few days preceding; (Robert,[55] Strümpell,[66] Hildebrandt,[35] also Weed-Hallam [33]). 2. That it makes its selection according to principles other than those of our waking memory, in that it recalls not what is essential and important, but what is subordinate and disregarded (_cf._ p. 13). 3. That it has at its disposal the earliest impressions of our childhood, and brings to light details from this period of life which again seem trivial to us, and which in waking life were considered long ago forgotten.[AP] These peculiarities in the selection of the dream material have of course been observed by the authors in connection with the manifest dream content. (_a_) _Recent and Indifferent Impressions in the Dream_ If I now consult my own experience concerning the source of the elements which appear in the dream, I must at once express the opinion that some reference to the experiences of _the day which has most recently passed_ is to be found in every dream. Whatever dream I take up, whether my own or another’s, this experience is always reaffirmed. Knowing this fact, I can usually begin the work of interpretation by trying to learn the experience of the previous day which has stimulated the dream; for many cases, indeed, this is the quickest way. In the case of the two dreams which I have subjected to close analysis in the preceding chapter (of Irma’s injection, and of my uncle with the yellow beard) the reference to the previous day is so obvious that it needs no further elucidation. But in order to show that this reference may be regularly demonstrated, I shall examine a portion of my own dream chronicle. I shall report the dreams only so far as is necessary for the discovery of the dream stimulus in question. 1. I make a visit at a house where I am admitted only with difficulty, &c., and meanwhile I keep a woman _waiting_ for me. _Source._—A conversation in the evening with a female relative to the effect that she would have to _wait_ for some aid which she demanded until, &c. 2. I have written a _monograph_ about a certain (obscure) species of plant.