In libraries which start with incomes of £500, provision should not be made for more than 20,000 volumes. In those with commencing incomes of £1000 to £2000 room, for 40,000 volumes will be found ample. From £2000 to £3000, 60,000 volumes; from £3000 to £4000, 100,000 volumes; from £4000 to £5000, 130,000 volumes; from £5000 to £6000, 160,000 volumes, and so on. Bearing these figures in mind, the planning of library buildings becomes greatly simplified. The main points to be aimed at in library planning are good light, convenient access to rooms, a fair amount of oversight, and the arrangement of departments so as to secure quiet in the principal reading rooms. For this last reason the reference library should be put farthest away from both newsroom and lending library, so that the traffic of these departments will not disturb readers. In small libraries it is best and most convenient to keep the whole of the departments on one floor, obtaining light, if necessary, from the roof. The sketch plan, Fig. 9, shows a convenient arrangement for such a library. [Illustration: FIG. 12.--Lambeth (Herne Hill Branch) Open Access Library with Radiating Stacks in a Square Room (Section 121).] =120.= The plans which are given in this section illustrate the principal points raised. They will also serve as suggestions to committees, librarians and architects charged with the establishment of new library buildings. Figs. 10 and 11 represent a building designed to be worked on the open access system in each department, and in every respect it is a model of good arrangement and convenience. [Illustration: FIG. 13.--Montrose Open Access Lending Library (Section 121).]