(1) The library schools. The best of these have supplied chiefly the heads of the smaller libraries, and heads of departments or assistants of the higher grades in the larger libraries. Few heads of the large libraries are school-graduates and few lower-grade assistants. There are, however, schools of the second class whose graduates have gone into the lower grades both in small and large institutions. (2) Apprentice classes, generally formed to instruct untrained persons in the work of a particular library, so that those who enter its lower grades may be at least partially fitted for their work. The best of these rise by promotion to the upper grades. (3) Appointment of totally untrained persons. If such persons are thoroughly well educated they may enter the work in the higher grades or even as the heads of libraries. B If not they generally enter at the bottom, although of course some obtain higher positions through political or local influence. This, I believe, states the situation fairly. What are the tendencies? There can be no doubt that the library school is growing in favor. The increasing numbers of those who apply for school courses, the raising of requirements, both for entrance and for graduation, the second class schools that have sprung up in limitation of those of higher grade, making necessary the appointment of committees by various library bodies to examine and report on them--all point in this direction. At the same time we have had numerous instances, of late, of the selection of non-graduates to fill high library positions and at least one instance of frank statement on the part of a librarian of acknowledged eminence, in favor of taking college men of ability into the library immediately on graduation, instead of putting them through a library school. The library schools aim, and very properly so, at occupying the same position toward the library profession that the medical and law schools do toward the medical and legal professions. Statistics show that they have not yet reached that position. Still, it is probable that they will continue to approximate to it as a limit. In the future, more and more of the higher library positions will doubtless be filled by library-school graduates--and so also will more of the lower positions. When the demand for assistants in the higher grades begins to slacken, proportionately to the supply, as it is sure to do some day, the library school graduates will be willing to enter the library force in the lower grade, and will thus crowd out the untrained or partially trained applicants to some extent. They may even make the apprentice class a superfluity, in which case I am sure librarians will abandon it without a sigh.