Sterilization in suitable cases is not a high price to pay for liberty. There are in our mental hospitals to-day men and women who suffer from recurrent insanity, who are admitted to the mental hospitals from time to time and discharged when they are better, and in the intervals between their admission cohabit with their wives or husbands, as the case may be, and bring more defective children into the world. If discretionary power were given to the Board as suggested it should, and no doubt would, be exercised cautiously and tentatively. Sterilization gives the patient liberty to do useful work in the community, is less drastic than segregation for life, and on the whole a much slighter interference with the rights of the individual, which are surely subordinate in such cases to the rights of the State. There are, of course, numbers of mental defectives who can never be allowed their liberty, and in the case of these the question of sterilization need not be considered. There are many cases of mentally defective girls, liberated from institutions in New Zealand for the purpose of engaging in domestic service or other work, returning afterwards the mothers of illegitimate children, probably also mentally defective. Unless such are to be maintained for years as wards of the State in institutions, should they ever again be allowed their liberty unless they undergo the operation of sterilization? This is the question: Can the propagation of mental defect by mental defectives and the debasing of the race thereby be greatly checked if not completely prevented? The answer is assuredly, Yes, by segregation and by sterilization. The Committee recommends that both methods be placed in the hands of the Eugenic Board, with powers to discriminate as to which method is the more suitable for each individual case. The two methods are complementary, not antagonistic, and suitable safeguards for the liberty of the subject are provided. The Committee recommends that the Eugenic Board should be given the power in suitable cases to make sterilization a condition of release from any of the institutions under the charge of the Department of Mental Hospitals or removal of their names from the register on probation, but that in no case should the operation be performed without the consent of parents or guardians of the persons concerned. The Committee consider that the persons so operated upon and liberated should be released on probation and kept under supervision for a reasonable period, and that they should be returned to institutional care if found to be leading an immoral life, or unable to support themselves, or for any other reason which the Eugenic Board may consider sufficient.