Before proceeding to the subject-matter of the Committee's investigations and the conclusions arrived at it is necessary to point out as clearly and emphatically as possible that the questions submitted to the Committee were entirely separate and distinct from each other. It is true that a certain proportion of mental defectives show their lack of self-control in regard to sex instincts and functions as in other respects. This is particularly the case with mentally defective girls, and constitutes one of the chief difficulties in dealing with them satisfactorily. Some of this class find their way into prison on account of sexual offences, but it is very far from correct to suppose that all feeble-minded persons are sexual offenders, or that all sexual offenders are mentally defective. On the contrary, among sexual offenders of the worst type, those convicted of unnatural offences, are occasionally found to be persons possessing intellectual and artistic powers above the average. There is something wrong in their mental, moral, and emotional balance, as will be pointed out in the proper place, but, as a rule, it is not the "intelligence quotient" which is at fault. PART II.--PROBLEM OF THE FEEBLE-MINDED. SECTION 1.--A MENACE TO MODERN CIVILIZATION. The Committee are of opinion that the unrestricted multiplication of feeble-minded members of the community is a most serious menace to the future welfare and happiness of the Dominion, and it is of the utmost importance that some means of meeting the peril should be adopted without delay. The position is the more serious because, while the feeble-minded are extraordinarily prolific, there is a growing tendency among the more intellectual classes for the birth-rate to become restricted. An American writer, Lothrop Stoddart, in his striking book entitled "Revolt against Civilization," expresses the fear that the very foundations of civilization are being undermined. He finds reasons for great pessimism as regards the future in the results of the intelligence tests taken in the American Army during the war. The American War Department made psychological tests of 1,700,000 officers and men, who were graded as follows:-- Grade. Percentage. Mental Age. A 41/2 18-19 Very superior intelligence. B 9 16-17 Superior intelligence. C1 161/2 15 Average intelligence. (Rarely capable of finishing high-school course.) C-- 25 13-14 Low average intelligence. D 15 11 Inferior intelligence. D-- 10 10 Very inferior intelligence.