"Percolation" Quotes from Famous Books
 ... low country into torrents, often entirely disappear, leaving only broad expanses of dry sand, which they have swept down with them from the hills. In this the elephants contrive to sink wells for their own use by scooping out the sand to the depth of four or five feet, and leaving a hollow for the percolation of the spring. But as the weight of the elephant would force in the side if left perpendicular, one approach is always formed with such a gradient that he can reach the water with his trunk ...
— Sketches of the Natural History of Ceylon • J. Emerson Tennent
... furnaces has been found necessary in the use of the gas fuel, except to brick up the fire bridge and to put in the gas and air pipes. The old grate used for coal is loosely covered with bricks and cinder, so that a slight percolation of air may take place through them. The gas is admitted through a half-inch pipe, and blows toward the fire-bridge through eighteen or twenty one-eighth inch jets. The air is blown in, at about 2 lbs. pressure, through two one and one-eighth-inch jets, ...
— The Galaxy, Volume 23, No. 2, February, 1877 • Various
... Mount Gambier is very open, and you may ride your horse along it unchecked for many miles. At the lower parts, and at some distance from it, the ground is moist, and many caverns have been found in which water of the very purest kind exists, no doubt deposited in the natural reservoirs by percolation from the higher ground. The whole formation of the district, these capacious caverns, and the numerous and extensive tea-tree swamps along the coast, plainly demonstrate that they are supplied by gradual filtration, or find their way through the ...
— Expedition into Central Australia • Charles Sturt |
