 | Edward Polehampton - 1815 - 472 pages
...is, how to cut it into horizontal pieces, to make as many millstones. For this purpose, cir. cular and horizontal indentations are cut out quite around...M. de Mairan, is employed in different places for making millstones. By what mechanism is this effect produced 1 This question has been proposed by M.... | |
 | E. Polehamton - 1815 - 470 pages
...an oven, are then driven into the indentations, by means of a mallet. When the wedges Lave sunk Jo a proper depth, they are moistened, or exposed to...other. Such is the process which, according to M. de Muirun, is employed in different places for making millstones. By what mechanism is this effect produced... | |
 | Edward Polehampton, John Mason Good - Natural history - 1818 - 492 pages
...moisiure, in overcoming the greatest resistances : it is the method by which millstones are produced. When a mass of this stone has been found sufficiently...M. de Mairan, is employed in different places for making millstones. By what mechanism is this effect produced .' This question has been proposed by... | |
 | Mrs. Jamieson (Frances Thurtle) - Costume - 1820 - 538 pages
...wedges have sunk to a proper depth they are moistened, or exposed to the humidity of the night air; and next morning the different pieces are found separated from each other. Such is the process according to M. de Mairan, in different places for making millstones. Ds. WALKER.—" It appears to... | |
 | Edward Polehampton - Natural history - 1821 - 462 pages
...by which millstones are produced. When a mass of this stone has been found sufficiently large, it it cut into the form of a cylinder, several feet in height...M. de Mairan, is employed in different places for making millstones. By what mechanism is this effect produced ? This question has been proposed by M.... | |
 | Perry Fairfax Nursey - Industrial arts - 1825 - 508 pages
...willow, dried in an oven, are then driven into the Indentations, by means of a mallett. 'Л'Ьеп the wedges have sunk to a proper depth, they are moistened,...M. de Mairan, is employed in different places for making щШ-stones. By what mechanism is this effect produced? This question has been proposed by M.... | |
 | Luke Herbert - Industrial arts - 1825 - 396 pages
...dried in an oven, are then driven into the indentations by means of a mallet. Thus situated the wedges are moistened, or exposed to the humidity of the night,...different pieces are found separated from each other. What takes place to produce this effect has never been satisfactorily explained. It has been usual... | |
 | 1825 - 424 pages
...mallet ; when the wedges have sunk- to a proper depth, they are moistened, or exposed to the air during the humidity of the night, and next morning the different pieces are found separated from each other.- The splitting of the stone is owing to the effect of attraction, by which the water is made to rise... | |
 | Books - 1831 - 660 pages
...mill-stones, into which wedges of dried wood are driven. These are then wetted, or exposed to the night dew, and next morning the different pieces are found separated from each other by the expansion of the wood, consequent on its absorption of moisture; An irresistible natural power... | |
 | Science - 1831 - 336 pages
...mill-stones, into which wedges of dried wood are driven. These are then wetted, or exposed to the night dew, and next morning the different pieces are found separated from each other by the expansion of the wood, consequent on its absorption of moisture; an irresistible natural power... | |
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For this purpose, circular and horizontal indentations are cut out quite around it, and at proper distances, according to the thickness to be given to the millstones. Wedges of willow, dried in an oven, are then driven into the indentations, by means... 
