On the third floor, reached by the western staircase and by the elevator, are the Library of French Thought (room 303), seminars 307 to 317, the map room (318), and a room (320) holding books not suitable for shelving in the regular stack. On the fourth floor are rooms 405 to 438, the majority used as private studies for members of the faculty, but a few of them combination seminar rooms and offices. There are also basements on the south and west sides, the former used by the University Press as a storage room, the latter, furnished with a freight entrance and a staff elevator, being the library receiving and unpacking room. From the rear of the building between these is a public entrance. This by means of a corridor and stairway, enables readers from the south to reach the ground floor. CLASSIFICATION The books in the Library are at present arranged according to two systems: 1. =The Library of Congress classification=, slightly modified. It is expected that the entire library will ultimately be reclassified by this system. Letters are used for main classes, subdivisions are chiefly indicated by numbers. The subjects now included in this classification are: CJ Numismatics CR Heraldry D History and topography, except America (in progress) E American history F ” ” (local) G Geography, Anthropology, Folk-lore, Manners and customs, Sports and games H Social sciences J Political sciences L Education 2. =The Rowell classification= which covers all subjects not reclassified. In it instead of letters, the classes are indicated by numbers from 1 to 999 with some sub-classes given lower case letters following these. A brief table of important main classes follows. 1-15 Philosophy 16-51 Religion 289-299 Law 333-561 Science 578-599 Industrial arts 600-681 Fine arts 682-999 Philology and literature All books in the stacks are arranged according to these classifications and shelf lists on cards are available in the Catalogue Room. These are useful because they show all books in a class whether or not they happen to be on the shelves at any one time. CATALOGUE The library card catalogue is filed in cases in the east end of the Delivery Hall and is in two parts.