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Show "Iced air" sounds delightfully refreshing when all humanity is panting with the fervid heat of summer. This term has been applied to the novel and elaborate system of ventilation which has been lately introduced into the Madison Square Theater. By means of two immense fan-wheels in the cellar the air in the theater is changed completely in five or six minutes. This supply of air is drawn from above the building, and is purified by pass-through a "dust catcher" made of cheese cloth. It is then cooled by passing over a huge vault filled with ice, and distributed by a complicated process to all parts of the house. The impure and heated air is removed by various ingenious devices. It is believed that no more effective method of cooling large buildings has ever been put into practical operation. -New York Paper. |