2023. The mud or earth-watt is formed of clay, or better of brick earth in a state between moist and dry, compactly rammed and pressed together between two movable boarded sides retained in their position by a frame of timber, which form between them the section of the wall; these boarded sides are placed inclining to each other so as to form a wall tapering as it ascends. One layer of the length of 12 or 20 feet being completed, another layer is formed on that, and so on, till the wall attains the given height, which in the Netherlands, and some parts of Germany, where these walls prevail, seldom is above 10 ft. A succinct account of the mode of forming these walls in Devonshire will be found in our Encyc. of Cottage, Farm, and Villa Architecture. ï¾º 839.