The term "genius" has been used by Terman--and following him by many others--to denote children testing at or above 140 IQ (S-B). In the light of the developmental data herein presented, it would appear that the term "genius" is thus misapplied, unless we wish to define as "geniuses" persons who represent approximately the best fourth of all students being graduated from American colleges. Of individuals here followed to early maturity, those who test at about 140 IQ (S-B) are found to define approximately the 75th percentile of college graduates, taking the country over. They are far from "genius," if by that term is to be meant the degree of mental ability that is capable of outstanding original intellectual achievement. It is only when we have an IQ (S-B) of at least 160 in a child, that we may begin to expect mildly noteworthy accomplishments, such as winning "honors" in a first-class college. Very rarely are "honors" won in first-class colleges by those who test below this status in childhood. The small sample of college graduates here presented is truly representative of the much larger sample in our files (not tested by our end tests) in this respect. Of primary interest to the present investigators is the subsequent history of those who in childhood have achieved the extremely infrequent rating of 180 IQ or higher. At maturity will these persons still stand out from their contemporaries in mental tests and in achievement? This question is answered affirmatively by our data. The five children here included, [3] who achieved IQ's (S-B) on _first_ test in childhood of more than 180, are they who "find the tops" on CAVD at maturity. Every one of these top-rank persons is noteworthy among contemporaries. Before the age of 22 in all cases, one had prosecuted research in history, one in mathematics, one in chess, and two had become established in learned professions. One stood high in the national ranking for chess. A long list of medals and prizes had been won by them. All but one of those graduated from college had been elected to Phi Beta Kappa. These unusual achievements show how children testing above 180 IQ rise above the generality of the college populations in adolescence and in early maturity. None of those who tested in childhood around 140, 150, or 160 IQ (S-B) approaches these others at maturity in honors and prizes won, or in test scores. This is, perhaps, the most significant fact to be derived from our data: that the children who test at and above 180 IQ constitute the "top" among college graduates. They are the students of whom one may confidently predict that they will win honors and prizes for intellectual work. Furthermore, it is shown that at approximately 190 IQ (S-B) individuals "go through the ceiling" of available tests for adult intelligence by the time they are 21 years old. We cannot at present distribute these persons at maturity.