The lifelessness and thoughtlessness of the iron-founders’ work predominate in the streets devoted to the retail trade, and the picturesque tourist in Chicago is thus compelled to traverse many miles of street fronts quite as dismal and as monotonous as the commercial architecture of any other modern town. There is a compensation for this in what at first sight seems to be one of its aggravations. The buildings which wear these stereotyped street fronts are much lower and less capacious than the increasing exigencies of business require, and than the introduction of the elevator makes possible, and they could not be other than cheap and flimsy in construction. Naturally the rebuilders of Chicago talked a great deal about “absolutely fire-proof” construction, but as naturally they did very little of it. The necessity for immediate accommodation, at a minimum of cost, was overwhelming, and cheap and hasty construction cannot be fire-proof construction. Accordingly, the majority of the commercial buildings now standing in Chicago are as really provisional and temporary as the tents and shanties, pitched almost on the embers of the fire, which they succeeded. The time being now ripe for replacing them by structures more capacious and durable, it is a matter for congratulation that there is nothing in the existing buildings of such practical or architectural value as to make anybody regret or obstruct the substitution. Even if the old-fashioned architects who rebuilt Chicago had been anxious to reconstruct it according to the best and newest lights, it would have been quite out of their power to do so unaided. The erection of a twelve-story building anywhere involves an amount of mechanical consideration and a degree of engineering skill that are quite beyond the practitioners of the American metallic Renaissance. In Chicago the problem is more complicated than elsewhere, because these towering and massive structures ultimately rest upon a quagmire that is not less but more untrustworthy the deeper one digs. The distribution of the weight by carrying the foundations down to a trustworthy bottom, and increasing the area of the supporting piers as they descend, is not practicable here, nor, for the same reason, can it be done by piling. It is managed, in the heaviest buildings, by floating them upon a raft of concrete and railroad iron, spread a few feet below the surface, so that there are no cellars in the business quarter, and the subterranean activities that are so striking in the elevator buildings of New York are quite unknown. If the architects of the old Chicago, to whom their former clients naturally applied to rear the phœnix of the new, had been seized with the ambition of building Babels, they would doubtless have made as wild work practically as they certainly would have made artistically in the confusion of architectural tongues that would have fallen upon them. It is in every point of view fortunate that the modernization of the town