After the selection of the books themselves there is nothing so important as thoughtful administration, a practical question, since the employment of assistants comes in under this head. Educators have for some time seen the mistake of putting the cheapest teachers over the primary schools--kindergartners have seen it--and it remains for the library to profit by their experience without going through a similar one. If there is on the library staff an assistant well read and well educated, broad- minded, tactful, with common sense and judgment, attractive to children in manner and person, possessed, in short, of all desirable qualities, she should be taken from wherever she is, put into the children's library, and paid enough to keep her there. There is no more important work in the building, no more delicate, critical work than that with children, no work that pays so well in immediate as well as in far-off results. Who that has met the fault- finding, the rudeness and coldness too frequent in a grown-up constituency, would not expand in the sunshine of the gratitude, the confidence, the good-will, the natural helpfulness of children! And it rests partly with the assistant to cultivate these qualities in them, and so modify the adult constituency of the future. I say THOUGHTFUL administration because the children's library is no sooner opened than it begins to present problems. Some of these are simply administrative and economic, others take hold of social and ethical foundations. There will be scarcely a day on which the librarian and the children's librarian will not have to put their heads, and sometimes their hearts, together over puzzling cases--cases of fraud, of mischief-making, of ignorant evil-doing, of inherited tendencies, physical, mental, and moral-- and sometimes it will seem as if the whole human creation were incurably ailing, and the doctrine of total depravity will take on alarming probability. But at this point some sound, smiling, active boy or girl comes in with a cheerful greeting, and pessimism retires into the background. And all this reminds me of one more quality which the children's librarian must have--a sense of humor. It is literally saving in some circumstances. Our own experience has led to the following suggestions, made by the children's librarian in our library to those who come in at given hours from the other departments to take her place or to assist her. It will be seen that most of them are the product of observation and thought arising from the daily evidence of the room itself: