 | William Newton - 1823 - Страниц: 384
...in its descent the workmen continually walk round, by which the hole is made smooth and cylindrical. In the progress of the boring, frequent veins of water are passed through, but as these^are small streams, and perhaps impregnated with mineral substances, the operation is carried... | |
 | William Newton, Charles Frederick Partington - 1823 - Страниц: 384
...in its descent the workmen continually walk round, by which the hole is made smooth and cylindrical. In the progress of the boring, frequent veins of water are passed through, but as these are small streams, and perhaps impregnated with mineral substances, the operation is carried... | |
 | 1823 - Страниц: 386
...in its descent the workmen continually walk round, by which the hole is made smooth and cylindrical. In the progress of the boring, frequent veins of water are passed through, but as these are small streams, and perhaps impregnated with mineral substances, the operation is carried... | |
 | Francis Lieber, Edward Wigglesworth, Thomas Gamaliel Bradford - 1830 - Страниц: 628
...which coils and uncoils itself successively upon the drill, and is aided by a weight or fly. — Boring for water has been, of late, successfully employed...the hole is generally cased with a metallic pipe. BORNEO, next to New Holland, the largest island in the world, is about 800 miles long and 700 broad,... | |
 | Francis Lieber, Edward Wigglesworth, Thomas Gamaliel Bradford - 1833 - Страниц: 614
...its descent, the workmen continually walk round, by which the hole is made smooth and cylindrical. In the progress of the boring, frequent veins of water are passed through ; but, as these are small streams, and perhaps impregnated with mineral substances, the operation is carried... | |
 | 1829 - Страниц: 424
...its descent, the workmen continually walk round, by which the hole is made smooth and cylindri. cal- In the progress of the boring, frequent veins of water are passed through ; but as these are small streams, and perhaps impregnated with mineral substance*, the operation is carried... | |
 | Francis Lieber, Edward Wigglesworth, Thomas Gamaliel Bradford - 1830 - Страниц: 608
...— Boñngfor water has been, of late, successfully employed in obtaining a supply without sinking а well. In the progress of the boring, frequent veins...the hole is generally cased with a metallic pipe. BORNEO, next to New Holland, the largest island in the world, is about 800 miles long and 700 broad,... | |
 | Francis Lieber, Edward Wigglesworth, Thomas Gamaliel Bradford, Henry Vethake - 1830 - Страниц: 612
...— Boring for water has been, of late, successfully employed in obtaining a supply without sinking u well. In the progress of the boring, frequent veins...by a pump. To exclude mineral waters, land-springs, \ r., the hole is generally cased with a metallic pipe. BORNEO, next to New Holland, the largest island... | |
 | Encyclopaedia Americana - 1833 - Страниц: 548
...its descent, the workmen continually walk round, by which the hole is made smooth and cylindrical. In the progress of the boring, frequent veins of water are passed through ; but, as these are small streams, and perhaps impregnated will) mineral substances, the operation is carried... | |
 | Francis Lieber, Edward Wigglesworth - 1835 - Страниц: 608
...uncoils itself successively upon the drill, and is aided by a weight or fly. — Boring for water ha?' been, of late, successfully employed in obtaining...the hole is generally cased with a metallic pipe. BORNEO, next to New Holland, the largest island in the world, is about 800 miles long and 700 broad,... | |
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... the sides smooth previous to putting in the pipe. This chisel is attached to rods and to the handle, as before described, and in its descent the workmen continually walk round, by which the hole is made smooth and cylindrical. 
