 | 1837 - 1032 páginas
...according to the principle explained in the diagram, the water will either rise through these bores into the drains and be carried off, and the natural springs will be dried up, or it will »ink dowa through them as at G, in the section, if it lies above. This method is often advantageous... | |
 | Daniel Pereira Gardner - 1846 - 898 páginas
...according to the principle explained in the diagram, the water will either rise through these bores into the drains and be carried off, and the natural springs...method is often advantageous in the draining of peat bogs, which generally lie on clay or stiff loam, with a layer of gravel between the loam and the peat,... | |
 | 1853 - 1032 páginas
...either rise through these bores into the drains and be carried off, or it will sink down through them if it lies above. This method is often advantageous in the draining of peat mosses. If the soil, whatever be its nature, can be drained to a certain depth, it is of no consequence what... | |
 | National cyclopaedia - 1879 - 722 páginas
...either rise through these bores into the drains and be carried off, or it will sink down through them if it lies above. This method is often advantageous in the draining of peat mosses. If the soil, whatever be its nature, can be drained to a certain depth, it is of no consequence what... | |
 | Tea cycolopaedia - 1882 - 406 páginas
...principle explained in the diagram, the water will either rise through these bores into the draine, and be carried off, and the natural springs will be dried up, or it will sink down through them, if it lies above. This method is often advantageous in the draining of peat mosses, which generally... | |
 | 1882 - 406 páginas
...explained in the diagram, the water will either rise through these bores into the drains, and be curried off, and the natural springs will be dried up, or it will sink down through them, if it lies above. This method is often advantageous in the draining of peat mosses, which generally... | |
 | None - 1854 - 600 páginas
...the principle explained in the preceding figure, the water will either rise through these bores into the drains, and be carried off, and the natural springs...This method is often advantageous in the draining of peat-bogs, which generally lie on clay or stiff loam, with a layer of gravel between the loam and the... | |
| |
... depth to take the water out of the porous stratum saturated with it, it is often useful to bore numerous holes with an auger in the bottom of the drain through the stiffer soil, and, according to the principle explained in the diagram, the water will... 