At the outset it is necessary to point out that although this Report is the result of deliberations extending over a period of four years, it does not profess to deal in an exhaustive manner with every aspect of mental deficiency. The main purpose of the Committee was to consider the problem from the administrative point of view and, whilst many other matters have been dealt with, the subject of mental deficiency is so large that these have necessarily only received somewhat brief mention. At the same time the Report extends over a considerable field, and there is little doubt that it will be regarded as an important contribution to the subject and one deserving of the careful attention of all who are in any way concerned with this class of persons. It is obviously impossible for me to discuss, or even refer to, all the matters which have been dealt with in the four parts of this Report; I shall accordingly confine my remarks to the more salient features.