Madeline's ancestry is very superior. On the paternal side, the grandfather was of English-Irish descent; the grandmother, of Scottish-French descent. Teaching and preaching have been the usual occupations. On the maternal side, the grandfather was of German-Dutch descent; the grandmother, of English descent. The child's parents are both university graduates, and they have done graduate work. She has two younger sisters, of 167 and 162 IQ (S-B), respectively. The family is in very moderate financial circumstances, having taken responsibility in the care of relatives. _Rosemarie_. In 1928, Schorn (20) reported upon a girl aged 4 years 6 months, who tested at 8 years Mental Age in the Psychologisches Institut at Würzberg. This report gives her an IQ of 184. She was brought to attention because she could read fluently at the age of 3 years 6 months, without having been schooled. The case of this child illustrates some of the points of misunderstanding of such children by those who have not seen several like them. Because she could not perform motor tasks in advance of her years, it was concluded that she "was not generally bright." _The case of K_. In 1934 Goldberg (11) described the case of K, a boy who achieved an IQ of 196 (S-B) when tested at the age of 6 years 7 months. K was born June 25, 1927, in New York City, of Jewish parents, and is an only child. The parents state from memory that K started to walk at 14 months of age, and could talk rather fluently at the age of 1 year 6 months. Dentition began at 8 months of age. His health has been very good, and he has had no serious illnesses. When K was 20 months old, he knew his alphabet and within a short while after that he was able to recite it backwards. At about the same time he had a set of blocks, which offered him additional opportunity for developing a well-nigh astounding feat. He could by looking at one of the figures on a given block call off from memory the other five objects on the remaining sides. This he was able to do for almost the entire set. At about 2 years of age K knew his own name and address and what is more significant the addresses and telephone numbers of the entire family, numbering about a dozen. By studying a calendar he learned to tell on what particular day a certain date would fall. For example, if he were asked on what day of the week July 16 would fall he would indicate Thursday. . . . K began to read at about 4 years of age. He was given no formal training in the beginning mechanics of reading. The only assistance he received was a suggestion that he "pronounce words by syllables." At this time he was already reading simple words easily.