Architects of experience, who have been students of library development in its every branch, who have followed the changes in the relations of the library to the people, have reached the same conclusions along broad lines, as have the librarians, with respect to lighting, access, oversight and administration, as well as the general correlation of universally important departments, and it is therefore my purpose to state our relationship rather than attempt the raising of issues on details of library arrangement, and to show if possible, that the skilled architect's method of procedure tends to settle mooted points by weighing values and considering relations of parts in a logical and broad minded study of the particular set of conditions pertaining to his problem. Either owing to the size, shape or contour of the site, its particular exposure, local climatic conditions, the particular character of the library itself or the people whom it serves, the problem presented to an architect by a library board is _always_ essentially a _new_ one. Certain fundamental rules may obtain through their universal applicability, but every step in the working out of a successful plan must be influenced by the particular conditions referred to, and here the co-operation of the librarian is of inestimable value to the architect, no matter how wide his experience may be. Desired correlation, like most results, can be achieved in divers ways, and in most cases nothing of utility need be sacrificed to secure a dignified plan, which is as much to be desired as a dignified exterior. Realizing the importance of accomplishing successful results, a scholarly architect will strive to mould his plan with an eye to symmetry, without losing sight for an instant of the conditions of use, and never sacrificing practical relationship to gain an _absolutely_ symmetrical arrangement of plan. The French architect will, if necessary, waste space or inject needless rooms into his plan to secure perfect balance, while his American student will gain all the value of the _effect_ without diminishing the practical value of his building one iota.