A LADY a former patient of mine who had retained her interest in psycho-analysis, called my attention to the case of a little boy, which she surmised would be of general interest.

The case was that of a five-year-old boy, Árpád by name, who according to the unanimous reports of all his relatives had developed up to the age of three and a half in quite a regular way both mentally and physically, and was said to have been a perfectly normal child; he spoke fluently and shewed considerable intelligence.

All at once he became quite different. In the summer of 1910 the family went to an Austrian spa, where they had also spent the previous summer, and took rooms in the same house as in the year before. Immediately after the arrival the child's demeanour changed in a curious way. Hitherto he had taken an interest in all the goings on, both indoors and out of doors, that might attract the attention of a child; from now on he was interested in only one