A representative group of 100 in the detention home at Newark, “chosen entirely at random,” was examined by Mrs. Gifford, and reported by herself and Dr. Goddard (_17_). In this group of 100 there were 66 between the ages of 14 and 17 who were at least four years retarded mentally. Moreover, among these 66 “none tested over eleven and only a few at that age.” Only average mental ages are published, so that we cannot tell how many tested XI or X, but the statement quoted shows that few of these 66 would test XI, and would thus be above our doubtful class. We may, perhaps, suppose that about 66% of this group in the Newark detention home tested as low as the randomly selected group at Thorn Hill, Pittsburgh. That the explanation of the excessive amount of deficiency found at Newark lies in the inadequate provision for recognized feeble-mindedness in that community is indicated by the Fourteenth Annual Report of the Newark City Home. It states that “the lack of a state institution for defective children made it necessary to commit to the City Home many children, who, on account of physical defects and psychic disturbances, have become juvenile delinquents.” A statistical table shows that of 181 boys, 151 were either illiterate or below the fifth grade in school in spite of the fact that the average age of the boys at the school is 13 years. This shows clearly that the differences between the test results at this institution and those in Minneapolis, Chicago, and elsewhere, is not the result of different methods of giving the tests. It seems to be mainly due to inadequate state provision for recognized feeble-minded children. Among the more serious juvenile court offenders we have a group of 1000 recidivists referred to Dr. William Healy at the Psychopathic Institute connected with the Chicago Juvenile Court. The cases are not tabulated separately for the sexes as to mentality. They were all under 21 and averaged between 15 and 16 years of age. While he used the Binet tests quite generally, as well as his own and Miss Fernald's series (_125_), Dr. Healy has not summarized his data in reference to the test standards. Nevertheless, according to his experience after the results of the test examinations were known, he classified only 89 of these cases as moron and 8 imbecile, a total of only 9.7% feeble-minded. Another group above these amounting to 7.9% was classed as of “subnormal mentality—considerable more educability than the feeble-minded” (_27_, p. 139).