The location of the issue-counter or desk is of cardinal importance. It should be located near the centre of the system of book-cases, or near the entrance to the stack, so as to minimize the time consumed in collecting the books wanted. It should also have a full supply of light, and this may be secured by a location directly in front of a large side window. Readers are impatient of delay, and the farther the books are from the issue-counter the longer they will have to wait for them.

Among modern designs for libraries, that of Dr. W. F. Poole, adapted for the Newberry Library, Chicago, is notable for dividing the library into many departments or separate rooms, the book shelves occupying one half the height of each, or 7½ feet out of 15, the remaining space being occupied by windows. This construction, of course, does not furnish as compact storage for books as the stack system. It is claimed to possess the advantage of extraordinarily good light, and of aiding the researches of readers. But it has the disadvantage of requiring readers to visit widely separated rooms to pursue studies involving several subjects, and of mounting in elevators to reach some departments. A system which brings the books to the reader, instead of the readers travelling after the books, would appear to be more practically useful to the public, with whom time is of cardinal importance.

In all libraries, there should be a receiving or packing room, where boxes and parcels of books are opened and books mended, collated, and prepared for the shelves. This room may well be in a dry and well lighted basement. Two small cloak-rooms for wraps will be needed, one for each sex. Two toilet rooms or lavatories should be provided. A room for the library directors or trustees, and one for the librarian, are essential in libraries of much extent. A janitor's room or sleeping quarters sometimes needs to be provided. A storage room for blanks, stationery, catalogues, etc., will be necessary in libraries of much extent. A periodical room is sometimes provided, distinct from the reading-room or the delivery department. In this case, if several hundred periodicals are taken, an attendant should be always present to serve them to readers, from the shelves or cases where they should be kept in alphabetical order. Without this, and a ticket system to keep track of what are in use, no one can readily find what is needed, nor ascertain whether it is in a reader's hands when sought for. System and the alphabet alone will solve all difficulties.

As to the space required for readers in a periodical room, it may be assumed that about five hundred square feet will accommodate twenty-five readers, and the same proportion for a larger number at one time. A room twenty-five by forty would seat fifty readers, while one twenty-five by twenty would accommodate twenty-five readers, with proper space for tables, &c. The files for newspapers are referred to in another chapter on periodicals.

In a library building, the heating and ventilation are of prime importance. Upon their proper regulation largely depends the health and consequently the efficiency of all employed, as well as the comfort of the reading public. There is no space to enter upon specific descriptions, for which the many conflicting systems, with experience of their practical working, should be examined. Suffice it to say in general, that a temperature not far below nor above 70 degrees Fahrenheit should be aimed at; that the furnace, with its attendant nuisances of noise, dust, and odors, should be outside the library building—not under it; and that electric lighting alone should be used, gas being highly injurious to the welfare of books.

In calculating the space required for books shelved as has been heretofore suggested, it may be approximately stated that every one thousand volumes will require at least eighty to one hundred square feet of floor measurement. Thus, a library of 10,000 volumes would occupy an area of nearly one thousand square feet. But it is necessary to provide also for the continual growth of the collection. To do this, experience shows that in any flourishing public library, space should be reserved for three or four times the number of volumes in actual possession. If rooms are hired for the books, because of inability to build, the library should be so arranged as to leave each alternate shelf vacant for additions, or, in the more rapidly growing divisions, a still greater space. This will permit accessions to be shelved with their related books, without the trouble of frequently moving and re-arranging large divisions of the library. This latter is a very laborious process, and should be resorted to only under compulsion. The preventive remedy, of making sure of space in advance, by leaving a sufficiency of unoccupied shelves in every division of the library, is the true one.

In some libraries, a separate reading-room for ladies is provided. Mr. W. F. Poole records that in Cincinnati such a room was opened at the instance of the library directors. The result was that the ladies made it a kind of social rendezvous, where they talked over society matters, and exhibited the bargains made in their shopping excursions. Ladies who came to study preferred the general reading room, where they found every comfort among well conducted gentlemen, and the "ladies' reading-room" was abandoned, as not fulfilling its object. The same experiment in the Chicago Public Library had the same result.

Some libraries in the larger towns provide a special reading-room for children; and this accomplishes a two-fold object, namely, to keep the public reading-room free from flocks of little people in pursuit of books under difficulties, and to furnish the boys and girls with accommodations of their own. It may be suggested as an objection, that the dividing line as to age is difficult to be drawn: but let each applicant be questioned, and if falling below twelve, or fifteen, or whatever the age limit may be, directed to the juvenile reading-room, and there need be no trouble. Of course there will be some quite young readers who are gifted with intelligence beyond their years, and who may dislike to be reckoned as children; but library rules are not made to suit exceptions, but for the average; and as no book need be refused to any applicant in the juvenile department, no just cause of complaint can arise.

In some libraries, and those usually of the larger size, an art room is provided, where students of works on painting, sculpture, and the decorative arts can go, and have about them whatever treasures the library may contain in that attractive field. The advantages of this provision are, first, to save the necessity of handling and carrying so many heavy volumes of galleries of art and illustrated books to the general reading-room, and back again, and secondly, to enable those in charge of the art department to exercise more strict supervision in enforcing careful and cleanly treatment of the finest books in the library, than can be maintained in the miscellaneous crowd of readers in the main reading-room. The objections to it concern the general want of room to set apart for this purpose, and the desirability of concentrating the use of books in one main hall or reading-room. Circumstances and experience should determine the question for each library.

Some public libraries, and especially those constructed in recent years, are provided with a lecture-hall, or a large room for public meetings, concerts, or occasionally, even an opera-house, in the same building with the library. There are some excellent arguments in favor of this; and especially where a public benefactor donates to a city a building which combines both uses. The building given by Mr. Andrew Carnegie to the Public Library of Washington will be provided with a small hall suited to meetings, &c. But in all cases, such a public hall should be so isolated from the library reading-room as not to annoy readers, to whom quiet is essential. This end can be effected by having the intervening walls and floors so constructed as completely to deaden sound. A wholly distinct entrance should also be provided, not communicating with the doors and passages leading to the library.