The uniformity of the long and curved colonnades which form the wings of the building is broken by square porticoes, which have entrances to the galleries and small terraces in front, with steps leading to the garden. The wall back of the white pillars of this long promenade is painted of a warm but not glaring red. The roof is of tile and skylight. The base of the colonnade beneath the balustrade and pillars is a rough concrete wall hidden by a sloping bank of evergreens, upon which the eye rests pleasantly amid so much wall-space and architectural decoration. In front of the corridor of the rotunda is a projecting balcony, with six gigantic female figures on the corners of its balustrade representing Europe, Asia, North and South America, Africa and Australia. These statues are of metal gilt, and typify by countenance and accompanying emblems the portions of the globe they represent. Europe is an armed figure with sword: at her side are the caduceus, olive-branch, books and easel. Asia has a spear and a couch with elephant heads. Africa is a negress, with the characteristic grass-rope basket containing dates. North America is an Indian, but the civilization of the land is indicated by an anchor, beehive and cog-wheel. Australia is a gin, with a waddy, boomerang and kangaroo. South America sits on a cotton-bale, has a condor by her side, and at her feet are tropical fruits--pineapples, bananas and brazil-nuts. The balustrade of the balcony is of a light marble with faint red mottling, and in front of it is a boiling pool of water at the level of the hand-rail. A large volume of water overflows the curved edge of this pool and falls twenty feet into a basin beneath, the first of a series of nine whose overflows in successive steps form the cascade technically known as a "chateau d'eau," the finest of which description of ornamental waterworks is at the Chateau St. Cloud, one of the mementos of the fatal luxury which precipitated the Revolution of 1789. The cascade of St. Cloud plays once a month for half an hour--that at the Exposition during the whole day. From one jet at St. Cloud issue five thousand gallons per minute: the supply at the Exposition is twenty-four thousand cubic feet per hour. Most of this water runs over the edge of the balcony-pool, and the fall of fifty-six cubic feet per second a distance of twenty feet creates no mean roar and mist in the archway beneath the balcony, where visitors walk behind the falls and look through the sheet of water. It is not fair to compare at all points the cascades of the Exposition and St. Cloud. The amount of water may probably not be greatly different, but the fantastic profusion of spiratory objects and long succession of overflow basins and urns in the works at the chateau has no parallel in those of the Trocadero. The cascades of St. Cloud are disappointing: the object should be to add to landscape effect by water in motion, and the principle is entirely missed when the