The comical ignorance and ineptitude of which quite brilliant minds are capable in regard to a matter that they wish to relegate to mental obscurity, was well exemplified in the remarks made to me on this subject, only ten years ago, by one who ranked then as now among the most eminent of British bacteriologists. He had been told, he said, that homo-sexuality came from meat-eating; and his solution of the problem was to have all homo-sexuals put to death. But the subject, he went on to say, did not interest him; nor did he propose to give the meat-eaters (of whom he himself was one) any warning of their pathological danger, or of his proposed remedy for the pathological condition to which their meat-eating habits might bring them. Having escaped the infection himself, he was quite willing, apparently, to leave the rest to chance. It was, he had been told, very prevalent, but personally he had not come across it. And so he continued to interest himself in bacteriology, through which fame, wealth, and title had come to him. As I left his consulting-room I felt as though I had just emerged from the Middle Ages, and from listening to the discourse of some learned theologian—a marvellous expert in the doctrine of the Incarnation and the Procession of the Holy Spirit, but still believing that the sun went round the earth, and that the earth was flat; and though—God aiding him—he would put to death any who thought otherwise, the subject did not interest him! He remains to me a portentous example of how a really brilliant mind can totter into second infancy when called upon to dig for the roots of knowledge outside his own cabbage-patch in hitherto uncultivated ground. What led me to this strange scientific experience was very much to the point. For it was just then, ten years ago, that I had been asked to join a society having for its object the formation of a more intelligent and less servile public opinion on this and various other difficult sex problems which are a part of human nature. I agreed to do so upon one condition—that membership should be open to men and women on equal terms, and that women should be upon the executive committee. Even in that comparatively enlightened group the proposal seemed revolutionary; and I was asked whether I realized that such things as homo-sexuality would have to be openly discussed. My answer was: “That is why we must include women.” I contended that where a problem concerns both sexes alike, only by the full co-operation of both sexes can it be rightly solved.