[67] Hammond (Treatise on Insanity, p. 229) knew a gentleman who dreamed he was in heaven and surrounded by dazzling brilliance, awaking to find that the smouldering fire had flared up. Weygandt dreamed that he was gazing at 'living pictures' illuminated by magnesium light, and awoke to find that the morning sun had just appeared from behind clouds and was flooding the room with light. See also Parish, Hallucinations and Illusions, p. 52.
[68] I have discussed erotic dreams in the study of 'Auto-erotism' in the first volume of my Studies in the Psychology of Sex (third edition, revised and enlarged, 1910).
[69] K. A. Scherner, Das Leben des Traums, 1861, pp. 187 et seq. Volkelt some years later (Die Traum-Phantasie, 1875, p. 74) pointed out the occurrence of somewhat similar vesical symbolisms (including in the case of women a filled knitting-bag) in dream life, though he regarded visions of water as the most usual indication in such dreams. Vesical dreams may, of course, contain other elements; see e.g. an example given by C. J. Jung, 'L'Analyse des Rêves,' L'Année Psychologique, 15th year, 1909, p. 165.
[70] A typical dream of this kind, of sufficient importance to be embodied in history, occurred several thousand years ago to Astyages, King of the Medes, and has been recorded by Herodotus (Book 1. ch. 107).
[71] In the study of Auto-erotism mentioned in a previous note I have brought forward dreams illustrating some of the points in the text, and have also discussed the analogies and contrasts between vesical and erotic dreams. The fact that nocturnal enuresis is associated with vesical dreams, though referred to by Buchan in his Venus sine Concubitu more than a century ago, is still little known, but it is obviously a fact of clinical importance.
[72] So, for instance, the asthmatic patient of Max Simon (Le Monde des Rêves, p. 40) who, during an attack, dreamed of sweating horses attempting to draw a heavy waggon uphill.
[73] Forbes Winslow also recorded cases (Obscure Diseases, pp. 611 et seq.), and many examples were brought together by Hammond (Treatise on Insanity, pp. 234 et seq.). Vaschide and Piéron discuss the matter and bring forward thirteen cases (La Psychologie du Rêve, pp. 34 et seq.). Féré recorded two cases in which dreams were the precursory symptoms of attacks of migraine (Revue de Médecine, 10th February 1903). Various cases, chiefly from the literature of the subject, are brought together by Paul Meunier and Masselon (Les Rêves et leur Interpretation, 1910).
[74] Sante de Sanctis, I Sogni, p. 380.
[75] The dependence of sleeping imagination on emotion of organic origin was long ago clearly seen and set forth by the acute introspective psychologist, Maine de Biran (Œuvres Inédites, 'Fondements de la Psychologie,' p. 102).
[76] Jastrow (The Subconscious, p. 206) relates a similar case observed in a girl student.