 | 1834 - عدد الصفحات: 614
...then kindled, and maintained till the rock below is thoroughly heated, immediately oil which a line of men and women, each provided with a pot full of...water, suddenly sweep off the ashes, and pour the water iuto the heated groove, when the rock at once splits with a clean fracture. Square blocks of six feet... | |
 | 1831 - عدد الصفحات: 616
...then kindled, and niaintained till the rock below is thoroughly heated ; immediately on which, a line of men and women, each provided with a pot full of...heated groove, when the rock at once splits with a clean fracture. Square blocks, of six feet in the *ifle, and upwards of eighty feet in length, are... | |
 | 1831 - عدد الصفحات: 896
...then kindled, and maintained till the rock below is thoroughly heated, immediately on which a line of men and women, each provided with a pot full of...heated groove, when the rock at once splits with a clean fracture. Square blocks of 6 feet in the side and upwards of 80 feet in length,* are sometimes... | |
 | 1831 - عدد الصفحات: 336
...then kindled, and maintained till the rock below is thoroughly heated, immediately on which a line of men and women, each provided with a pot full of...into the heated groove, when the rock at once splits \vith a clean fracture. Square blocks of six feet in the side, and upwards of eighty feet in length,... | |
 | 1831 - عدد الصفحات: 336
...below is thoroughly heated, immediately on which a line of men and women, each provided with a pot lull of cold water, suddenly sweep off the ashes, and pour...heated groove, when the rock at once splits with a clean fracture. Square blocks of six feet in the side, and upwards of eighty feet in length, are sometimes... | |
 | 1831 - عدد الصفحات: 660
...then kindled, and maintained till the rock below is thoroughly heated, immediately on which a line of men and women, each provided with a pot full of cold water, suddenly sweep off the ashes, and pours the water into the heated groove, when the rock at once splits with a clean fracture. Square... | |
 | 1831 - عدد الصفحات: 444
...then kindled, and maintained till the rock below is thoroughly heated, immediately on which a line of men and women, each provided with a pot full of cold water, suddenly sweep off the ashes, pours the water into the heated groove, when the rock at once splits with a clean fracture. Square... | |
 | Samuel Drew - 1831 - عدد الصفحات: 658
...kindled, and maintained till the rock below is thoroughly heated ; immediately on which, a line of men ana women, each provided with a pot full of cold water, suddenly sweep off the ,i«bea, and pour the water into the in-, KI . | groove, when the rock at once splits with • clean... | |
 | 1832 - عدد الصفحات: 548
...below is thoroughly heated, immediately on which a line of men and women, each pi ovided with a pot of cold water, suddenly sweep off the ashes, and pour the water i it the heated groove, when the rock at once splits with a clean fracture. Square blocks, of six feet... | |
 | 1833 - عدد الصفحات: 270
...below is thoroughly heated, immediately on which a line of men and women, each provided with a pot of cold water, suddenly sweep off the ashes, and pour...heated groove, when the rock at once splits with a clean fracture. Square blocks, of six feet in the side, and upwards of eighty feet1 in length, are... | |
| |
... it a line in the direction of the intended separation, along which a groove is cut with a chisel about a couple of inches in depth. Above this groove a narrow line of fire is then kindled, and maintained till the rock below is thoroughly heated, immediately... 
