The librarian of yesterday thus stops with a question; the librarian of to-day proceeds to answer it. He finds out why they don’t come. He may discover one or more of any number of things; whatever may be the causes, they are sure to be interesting, at least to him, for the to-day librarian is a born investigator. It may be that the non-readers are literate, but take no interest in books; perhaps they say they have no time to read; possibly the library has not the kind of books that they like; they may be foreigners, reading no English, and the library may have no books in their tongue. Whatever the trouble may be, the librarian of to-day sets about to remedy it. He may not succeed; but it is the diagnosis and the attempt at treatment, not its success, that constitute him what he is. Problem Third. The reading done through the library is trivial and inconsequential. The fiction drawn is of low order, and there is little else read. The way in which this will affect the three types of librarian may be predicted at once. The librarian of the day-before-yesterday heeds it not; the librarian of yesterday heeds and perhaps worries, but does nothing. The librarian of to-day finds out the trouble and then tries to remedy it. And so it goes: you may construct other problems for yourselves and imagine their solution, or lack of solution. Now, it is obvious that there are great and evident objections to being a librarian of to-day and corresponding advantages in being one of the other kinds. In the first place the to-day variety of librarianship involves brainwork and it is always difficult to use one’s brain--we saw that in the case of the street-cleaner. Then this kind of librarian must be always looking for trouble. Instead of congratulating himself that all is going smoothly, he must set out with the premise that all cannot be going smoothly. There must be some way in which his books can be made to serve more people and serve them better; and it is his business to find out that way. Then the to-day librarian must use his statistics. The librarian of the day before yesterday probably takes none at all. The librarian of yesterday collects them with diligence, but regards any suggestion that they might be of use somewhat as the lazy wood-sawyer did the advice that he should sharpen his saw. “I should think I had a big enough job to cut up all this wood,” he replied petulantly, “without stopping to sharpen saws.” The librarian of yesterday has trouble enough in collecting and tabulating his statistics without stopping to use them--to make any deductions from them--to learn where the library machine is failing and where he should use the wrench or the oil can. All these things and many others make it easier for the overworked librarian to drop back into yesterday, or the day before. It should be borne in mind, however, that the difference between the three types of librarian is not so much difference in the amount of work done as it is