Heating Plant. As this plant cannot be located in a separate building it should be as nearly isolated as possible. It should be so constructed that there will be ample room for the handling of all tools, especially while working at the boilers.

Height of Floor, see Floors, Height of.

Information Desk. Space should be provided for an information desk if possible near the main entrance, or near the Reference and Delivery Departments, if they are quite near together.

Interchange Department. This department, which has charge of the interchange of books among the branches, should have an office for superintendents and assistants near or connected with the Traveling Libraries Department.

It should also be near or easily connected with the Official or Public Catalog and the Book Stack.

Janitor’s Living Rooms. It is desirable, if space permits, that five or six living rooms similar in arrangement to a small apartment be provided for the janitor so that he may be in the building at all times.

These rooms should be located on the top floor.

Janitor’s Rooms. A work room containing lockers, and closets for the storage of necessary tools should be located in the basement for the use of the janitor. An office for his use might also be provided.

These rooms should be near the Stock and Store Rooms and the Supply Department.

Lavatories, see Toilets.