=80. Superintendent of Branches.=--This librarian acts as a _liaison_ officer between the chief librarian and the branch librarian in systems where there are many branch libraries. He must be qualified to assess the work of each library and to co-ordinate the whole branch system, to look over time-sheets, examine into the performance of the assistants, judge their capacity and training, advise as to the books required in particular localities, and, in general, make the units of the system smooth-working parts of a homogenous whole. It is probable that a capable superintendent is an economy of some consequence in a large system. Few libraries, however, with less than a dozen branches possess such an officer, his duties usually in other cases falling upon the chief or deputy librarians. The superintendent is subordinate to the deputy-librarian, and his salary is something more than that of a branch or departmental librarian. =81. Departmental Librarians.=--Of recent years the tendency in library work has been towards specialization, and in most libraries of any size assistants are given more or less permanent charge of departments, and are usually called librarians-in-charge. The librarian of a branch library falls into this category although he may not occupy exactly the same level on the staff as the librarian-in-charge of the reference library; as, also, in libraries which have such departments, does the head of the cataloguing staff, the order division, etc. In the great libraries the librarian-in-charge of the reference department is easily the head of the grade we are discussing, as he must obviously be a person of considerable bibliographical acquirements in addition to being the possessor of a complete library training, and his work lies with inquirers, research workers, and similar readers who require skilled and sympathetic assistance. In the majority of libraries all librarians-in-charge are regarded as official equals. Their salaries are obviously governed by the wealth and work of the library concerned, but a rough calculation ranges them at from the inadequate minimum of £90 to about £250 or more, with many intermediate scales. The duties of a librarian-in-charge involve the responsibility of conducting the department according to the prevailing library policy, the arranging of the duties of the staff and the seeing that they are performed, the training of the staff, the maintenance of order in public rooms, and the exploiting of the department to the utmost in the interest of the public.