It is prepared for in the substructure only by a slight and inadequate projection of the piers, while it is itself obviously destined for profitable occupancy, being a small three-story business block, superimposed upon a huge ten-story business block. Such a structure cannot be converted into a monumental feature by making it more massive at the top than it is at the bottom, [Illustration: TOWER OF AUDITORIUM. Adler & Sullivan. Architects.] even though the massiveness be as artistically accentuated as it is in the tower of the Auditorium by the powerful open colonnade and the strong machicolated cornice in which it culminates. Waiving, as the designers have been compelled to do, the main purpose of the structure, and considering it as a commercial building, the Auditorium does not leave very much to be desired. The basement, especially, which consists of three stories of granite darker than the limestone of the superstructure, and appropriately rough-faced, is a vigorous and dignified performance, in which the expression of rugged strength is enhanced by the small and deep openings, and in which the necessarily large openings of the ground-floor are prevented from enfeebling the design by the massiveness of the lintels and flat arches that enclose them, and of the piers and pillars by which these are supported. The superstructure is scarcely worthy of this basement. The triple vertical division of the wall is effectively proportioned, but a much stronger demarcation is needed between the second and third members than is furnished by the discontinuous sill-course of the eighth story, while a greater projection, a greater depth, and a more vigorous modelling of the main cornice, and an enrichment of the attic beneath, would go far to relieve the baldness and monotony that are the defects of the design, and that are scarcely to be condoned because there are architectural faults much worse and much more frequent, which the designers have avoided. It is only, as has been said, in the entrances that they have been permitted to exhibit the object of the building. Really, it is only in the entrance on the Lake front, for the triplet of stilted arches at the base of the tower is not a very felicitous or a very congruous feature. The three low arches of the Lake front are of a Roman largeness--true vomitoria--and their effectiveness is increased by the simplicity of their treatment, by the ample lateral abutment provided for them, and by the long and shallow balcony that overhangs them. With the arches themselves this makes a very impressive feature, albeit the balcony is a very questionable feature. Even to the layman there must be a latent contradiction in the intercalation of the pillar to relieve the bearing of a lintel, when the pillar is referred to an unsupported shelf, obviously lighter and weaker than the lintel itself. This contradiction is not explained away by the vigor and massiveness of the