──────────┬──────────────────────────────────────────────────────────── Life-Ages │ Mental Ages ──────────┼─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┬────── │ IV │ V │ VI │ VII │VIII │ IX │ X │ XI │ XII │Totals ──────────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼────── 18│ │ │ │ │ │ │ 2│ │ │ 2 17│ │ │ │ │ 1│ 3│ 3│ 1│ 2│ 10 16│ │ │ │ │ 2│ 5│ 7│ 7│ 1│ 22 15│ │ │ │ 1│ 3│ 8│ 8│ 8│ 1│ 29 14│ 1│ 1│ │ │ 3│ 4│ 6│ 5│ 2│ 22 13│ │ 1│ │ │ 3│ 4│ 3│ 4│ 3│ 18 12│ │ │ │ │ │ 4│ 4│ 1│ 1│ 10 11│ │ │ │ 1│ │ 1│ 1│ │ │ 3 10│ │ │ │ 1│ 1│ │ 2│ │ │ 4 9│ │ │ │ │ 2│ 1│ │ │ │ 3 8│ │ │ │ 1│ │ │ │ │ │ 1 ──────────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼────── Totals │ 1│ 2│ 0│ 4│ 15│ 30│ 36│ 26│ 10│ 124 ──────────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴────── The accompanying Table X shows the distribution, omitting the dementia praecox cases. It classes .8 as in the next higher test age and shows the last birthday for life-age. In interpreting these figures it is highly important to remember that Thorn Hill is necessarily used at present to shelter deficient boys who are dependent or delinquent and cannot be otherwise provided for. This is undoubtedly a wise temporary relief until the state takes proper care of these unfortunates. Under the cottage system which prevails at Thorn Hill the segregation can be made with little interference with the main purpose of an institution for delinquents. It is apparent that any deductions made from the large frequency of feeble-mindedness among these delinquents without considering the particular local conditions under which they are found, would be wholly unjustified. A similar local condition probably explains the high percentage of tested deficiency among the following group of boys in the Newark, N. J., detention home.