America boasts of having the finest educational system in the world. Harvard is, if not the most distinguished, certainly among the first institutions in the country; but it is necessary only to stand upon the threshold of the first Harvard house which I entered, to pass through its mean entry and climb up its uncouth staircase, to be assured that our educational system has not yet found its key-stone. It has all the necessary materials, but it is incomplete. At its base it is falling every day more and more into shape and symmetry, but towards the top it is still only a pile of pebbles and boulders, and no arch. We have Primary Schools, Grammar Schools, High Schools, in which, first, boys and girls are educated together, as it seems impossible not to believe that God meant them to be; in which, secondly, home life and school life come together, and correct each other; in which, thirdly, comfortable and comely arrangements throughout minister to self-respect. But the moment you rise as high as a college, nature is violated. First, boys go off by themselves to their own destruction; secondly, home influences withdrawn; and, thirdly,--at Harvard, which the only college I ever visited,--the thorough comeliness which is found in the lower grades of schools does not appeal. The separation of boys and girls in school is a subject which has much talked about, but has not yet come to its adequate discussion. But the achievements of the past are the surest guaranties of the future. When we remember that, sixty years ago, the lowest district public schools were open to boys only, and that since that time girls have flocked into every grade of school below a college, it is difficult to believe that college doors will forever stand closed to them. _I_ believe that the time will come when any system framed for boys alone or for girls alone will be looked upon in the same light in which we now regard a monastery or a nunnery. Precisely the same course will not be prescribed to both sexes, but they will be associated in their education to the inestimable advantage of both.