When the Free Circulating Library grading was made, there were neither children’s rooms nor children’s librarians in New York, and very few anywhere. The former arose first and were served by persons assigned for the purpose, usually from Grade C. The organization, later, of a separate children’s department, with jurisdiction over all children’s rooms, made it necessary to place children’s librarians in a separate class; but that they might not feel “out of the running” for branch librarianships, they were allowed to take examinations and advance from one regular grade to another, in addition, if they so desired. Catalogers were still graded regularly, however, although these might have been easily treated in a similar way. The special nature of their work, however, was recognized by a variation in the examination. The test for the children’s grade was not an examination, but a series of periods of practical work in selected branch libraries, with observation and report and a final thesis. Candidates were specially selected by the supervisor of children’s work, and so jealously has entrance into this grade been guarded that even now not more than half of the forty or more assistants in charge of New York’s children’s rooms are members of it. In later years a thesis also has formed part of the examination for Class A. This is written on an assigned subject, and the successful ones are sometimes, although not always, printed. One of the difficulties connected with the grading in the Circulation Department of the New York Public library was the assignment to proper grades of the staffs of the different institutions that consolidated with that library from time to time. There were altogether about half a dozen of these, with staffs varying in number perhaps from five to forty or fifty persons. It was decided to leave the assignment entirely to the authorities of these libraries, who practically graded their staffs on a plan corresponding with ours before consolidation, so that there was no change of grade afterward. The responsibility was thus thrown upon bodies of men with whose authority the new staffs were familiar and which they would be inclined to accept. The assignments were made with varying degrees of care and validity, but were, on the whole, just, and there was little complaint with them. Too low an assignment was corrected by the next examinations for promotion, and a person graded too high never at all events, rose any higher. The smoothness with which these consolidations took place, even sometimes against the will and with the dismal foreboding of the dispossessed authorities, and the rapidity with which the entire staff became homogeneous, both in feeling and in quality of work, are sufficient justification of this particular policy, which was typical of that of the library in regard to other features of these consolidations.