A large piece of land, barely above high-water mark, is levelled, and if necessary puddled with clay.
Wherever the base of a puddle wall cannot be worked into a continuous bed of clay or shale, or tied into a groove cut in sound rock free from water-hearing fissures, the safest course is to base it on an artificial material at once impermeable and incapable of erosion, interposed between the rock and the puddled clay.
However well the work may be done, the lower part of a mass of puddled clay invariably settles into a denser mass when weighted with the clay above.
Large spots of blood puddled the tile in a dozen places.
These large charges are puddled by two gangs of four men each, and a great saving in fuel and labour is effected.
It resembles the Casa Grande ruin of Chihuahua, Mexico, with its walls of sundried puddled clay, and its area of rooms, courts and plazas, surrounded by a wall.
Here BB is a large fixed iron cylinder, corrugated within, and C an excentric cylinder, also corrugated, which, in turning to the right, by the friction of its corrugated surface rotates the puddled ball D which has just entered at A, so that, turning around its own axis, it travels to the right and is gradually changed from a ball into a bloom, a rough cylindrical mass of white hot iron, still dripping with cinder.
Its construction drew much attention to the subject of masonry dams in England - where the earthwork dam, with a wall of puddled clay, had hitherto been almost universal - and since its completion nine more masonry dams of smaller size have been completed.