The engineers as well as the landscape gardeners and architects, have been set effectively to work. Twenty miles of water pipes have been laid to provide a supply of 64,000,000 gallons daily. For supplying power to machinery there are boilers and engines of 25,000 horse-power and for generating electricity, 18,000 horse-power; for driving small independent exhibits, 2,000 horse-power, for pumps 2,000 horse-power and for compressed air, 3,000 horse-power. The lighting of the grounds and buildings will require the use of 7,000 electric arc lights and 100,000 incandescent lamps. Preparations have been made for disposing of 6,000,000 gallons of sewage every 24 hours. Contracts for the work of construction have been let to the lowest competent bidders wherever found. They have thus been awarded in Philadelphia, New York, and Boston; in San Francisco, Seattle, and Omaha; in Minneapolis and Duluth; in Kansas City and St. Louis; in Leavenworth and Louisville; in Milwaukee, Detroit, Cleveland, and Pittsburgh; in Birmingham, Alabama; in Wilmington, Delaware; in Plainfield, New Jersey; in Jackson, Michigan; and in Stamford, Connecticut. This is a slight indication of the national character of the work. Its international character is also shown by the awarding of contracts in London, Paris, Berlin, Rome, Edinburgh, Florence, and Constantinople. But with such characteristic energy is the work of construction now being pushed that the completed buildings may be spoken of in the present rather than in the future tense. A brief description of the most important of them will not come here amiss: One of the finest structures on the Exhibition Grounds is the Agricultural Building, as befits the foremost agricultural nation on the globe. It stands near the shore of the lake, almost surrounded by the lagoons. The style of architecture is classic renaissance, and the building is 500 by 800 feet in ground area. It consists of a single story, with a cornice line 65 feet above the ground. Huge Corinthian pillars flank the main entrance, each 50 feet high and 5 feet in diameter. At each corner and from the centre of the building rise huge pavilions, that at the centre being 144 feet square. The four corner pavilions are connected by curtains, forming a continuous arcade around the top of the building. The main entrance leads through an opening 64 feet wide into a vestibule, and thence into the rotunda, 100 feet in diameter, surmounted by a glass dome 130 feet high. The corner pavilions are surmounted by domes 96 feet high.