I have here less to say against coeducation in college, still less in university grades after the maturity which comes at eighteen or twenty has been achieved; but it is high time to ask ourselves whether the theory and practise of identical coeducation, especially in the high school, which has lately been carried to a greater extreme in this country than the rest of the world recognizes, has not brought certain grave dangers, and whether it does not interfere with the natural differentiations seen everywhere else. I recognize, of course, the great argument of economy. Indeed, we should save money and effort could we unite churches of not too diverse creeds. We could thus give better preaching, music, improve the edifice, etc. I am by no means ready to advocate the radical abolition of coeducation, but we can already sum up in a rough, brief way our account of profit and loss with it. On the one hand, no doubt each sex develops some of its own best qualities best in the presence of the other, but the question still remains, how much, when, and in what way, identical coeducation secures this end? As has been said, girls and boys are often interested in different aspects of the same topic, and this may have a tendency to broaden the view-point of both and bring it into sympathy with that of the other, but the question still remains whether one be not too much attracted to the sphere of the other, especially girls to that of boys. No doubt some girls become a little less gushy, their conduct more thoughtful, and their sense of responsibility greater; for one of woman's great functions, which is that of bestowing praise aright, is increased. There is also much evidence that certain boys' vices are mitigated; they are made more urbane and their thoughts of sex made more healthful. In some respects boys are stimulated to good scholarship by girls, who in many schools and topics excel them. We should ask, however, What is nature's way at this stage of life? Whether boys, in order to be well virified later, ought not to be so boisterous and even rough as to be at times unfit companions for girls; or whether, on the other hand, girls to be best matured ought not to have their sentimental periods of instability, especially when we venture to raise the question, whether for a girl in the early teens, when her health for her whole life depends upon normalizing the lunar month, there is not something unhygienic, unnatural, not to say a little monstrous, in school associations with boys when she must suppress and conceal her feelings and instinctive promptings at those times which suggest withdrawing, to let nature do its beautiful work of inflorescence. It is a sacred time of reverent exemption from the hard struggle of existence in the world and from mental effort in the school. Medical specialists, many of the best of whom now insist that through this period she should be, as it were, "turned out to grass,"