Indeed, this same instrument is at present nowise restricted by that condition in Colorado, and is not only, year by year, altering the conformation of all sand and clay bluff's on the Plains, but is tearing down, rebuilding, and fashioning on its facile lathe many rock-strata of the solidity of the more friable grits, wherever exposed to its action. Water at the East does hardly more than wind at the West. Before we enter the City of the Saints, let me briefly describe the greatest, not merely of the architectural curiosities, but, in my opinion, the greatest natural curiosity of any kind which I have ever seen or heard of. Mind, too, that I remember Niagara, the Cedar-Creek Bridge, and the Mammoth Cave, when I speak thus of the _Church Buttes_. They are situated a short distance from Fort Bridger; the overland road passes by their side. They consist of a sandstone bluff, reddish-brown in color, rising with the abruptness of a pile of masonry from the perfectly level plain, carved along its perpendicular face into a series of partially connected religious edifices, the most remarkable of which is a cathedral as colossal as St. Peter's, and completely relieved from the bluff on all sides save the rear, where a portico joins it with the main precipice. The perfect symmetry of this marvellous structure would ravish Michel Angelo. So far from requiring an effort of imagination to recognize the propriety of its name, this church almost staggers belief in the unassisted naturalness of its architecture. It belongs to a style entirely its own. Its main and lower portion is not divided into nave and transept, but seems like a system of huge semi-cylinders erected on their bases, and united with reentrant angles, their convex surfaces toward us, so that the ground-plan might be called a species of quatre-foil. In each of the convex faces is an admirably proportioned door-way, a Gothic arch with deep-carved and elaborately fretted mouldings, so wonderfully perfect in its imitation that you almost feel like knocking for admittance, secure of an entrance, did you only know the "Open sesame." Between and behind the doors, alternating with flying-buttresses, are a series of deep-niched windows, set with grotesque statues, varying from the pigmy to the colossal size, representing demons rather than saints, though some of the figures are costumed in the style of religious art, with flowing sacerdotal garments.