Hallucination has been described as "seeing" something which has no basis in reality. Thus it differs from delusion, which is rather a misinterpretation of what is seen. "Delusions are closely allied to hallucinations and generally accompany the latter. The distinction lies in the fact that delusions are not false sensations but false beliefs."[44] Anxiety, distraction by grief and loss, as well as nervous shock play freely with the mind and fancy and often swerve the judgment of perception. This was especially noticeable at Halifax in the hospital identification, particularly of children. A distracted father looked into a little girl's face four different times but did not recognize her as his own which, in fact, she was. The precisely opposite occurrence was also noted. A fond parent time and time again "discovered" his lost child, "seeing" to complete satisfaction special marks and features on its little body. But often there were present those who knew better, and the better judgment prevailed. Again this phenomenon was repeated in numberless instances at the morgue. Wearied and white after frantic and fruitless search wherever refugees were gathered together, the overwrought searchers would walk through the long lines of dead, and suddenly "recognize" a missing relative or friend.[45] Regretfully the attendant fulfilled the same thankless task from day to day. There had been no recognition at all. The observer had seen "not the object itself but the image evoked in the mind."[46] [44] Hart, _op. cit._, ch. iii, p. 31. [45] For parallel cases of erroneous recognition of the dead, _vide_ Le Bon, Gustave, _The Crowd, a Study of the Popular Mind_ (London), bk. i, ch. i, p. 51. [46] _Ibid._, p. 51.