The identification of the processes of birth and coitus is well shown in the following dream of a patient. "I was with difficulty crawling through a very narrow tunnel under a mountain which, I thought, was called the Aalberg. I was a good deal frightened but saw the end of the tunnel a long way off. In trying to get out, I seemed to force my way forward by continually butting with my head against some kind of soft wall". The movement here described is a clear coitus symbol (head = penis), while the mountain would appear to have derived its name from the phallic significance of the eel. In a certain number of cases the idea of returning to the mother's womb or of being born is coloured by the infantile "cloacal theory" of birth, according to which the child imagines birth to take place through the rectum. This is shown with exceptional clearness in the following dream. "I was walking down a long and narrow flight of stairs. They seemed to be the _back_ stairs of a large house or hotel and were very dirty and ill-lit, and every now and then I would tread in a pool of dirty water. The stairs suddenly (note the words in italics) opened out towards the _bottom_ and I emerged into a _back_ yard. I found I was covered with soot and dust and my boots were filthy." (_Cp._ the well known passage from St. Augustine, "Inter urinas et faeces nascimur").] [Footnote 66: Freud, "Sammlung kleiner Schriften zur Neurosenlehre." IV, 693, 694. Further evidence has recently been brought together by Mrs. S. C. Porter in a (not yet published) paper on Brontephobia.] [Footnote 67: Freud, "Sammlung kleiner Schriften zur Neurosenlehre," II, 169. Jung, "Collected Papers on Analytical Psychology," 132.] [Footnote 68: Rank, "Die Lohengrinsage," 107 ff. "Das Inzestmotiv in Dichtung und Sage," 261 ff. This however does not exhaust the significance of the forbidden question motive, another important aspect of which is referred to later.]