 | 1877 - 280 páginas
...10,000 parts in 100,000 parts of water, the risk is very inconsiderable, and may be regarded as ml if the direct access of water from the upper strata...to which such water has been subjected, in passing downward through so great a thickness of soil or rock, aiid the rapid oxidation of the organic matters... | |
 | Sir Edward Frankland - 1880 - 164 páginas
...however, if the proportion of previous contamination do not exceed 10,000 parts in 100,000 parts of water, this risk is very inconsiderable, and may be regarded...to which such water has been subjected in passing downward through so great a thickness of soil or rock, and the rapid oxidation of the organic matters... | |
 | William Henry Penning - 1880 - 188 páginas
...it descends through 100 feet or upwards of porous soil or rock, the exhaustive nitration to which it has been subjected, in passing downwards through so great a thickness of material, and the rapid oxidation of the dissolved organic matters in a porous and aerated medium,... | |
 | Charles Ekin - 1880 - 56 páginas
...of a churchyard, is considered wholesome, on the ground that " the exhaustive filtration to which it has been subjected, in passing downwards through so great a thickness of material, and the rapid oxidation of the dissolved organic matter in a porous and aerated medium, afford... | |
 | W. H. Penning - 1880 - 186 páginas
...descends through 100 feet or upwards of porous soil or rock, the exhaustive filtration to which it has been subjected, in passing downwards through so great a thickness of material, and the rapid oxidation of the dissolved organic matters in a porous and aerated medium,... | |
 | Thomas J. Bell - 1882 - 160 páginas
...descends through one hundred feet or upwards of porous soil or rock, the exhausted filtration to which it has been subjected in passing downwards through so great a thickness of material, and the rapid oxidation of the dissolved organic matters in a porous and aerated medium,... | |
 | Thomas J. Bell - 1882 - 154 páginas
...descends through one hundred feet or upwards of porous soil or rock, the exhausted filtration to which it has been subjected in passing downwards through so great a thickness of material, and the rapid oxidation of the dissolved organic matters jn a porous and aerated medium,... | |
 | Sir Edward Frankland, Francis Robert Japp - 1885 - 732 páginas
...however, if the proportion of previous contamination do not exceed 10,000 parts in 100,000 parts of water, this risk is very inconsiderable, and may be regarded...the upper strata be rigidly excluded ; because the prolonged filtration to which such water has been subjected in passing downward through so great a... | |
 | 1901 - 788 páginas
...however, if the proportion of previous contamination do not exceed 10,000 parts in 100,000 parts of water, this risk is very inconsiderable, and may be regarded...strata be rigidly excluded ; because the excessive nitration to which such water has been subjected in passing downwards through so great a thickness... | |
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... liable to be incomplete during the rapid passage of polluted surface water into shallow wells. In the case of deep well and spring water, however, if the proportion of previous contamination do not exceed 10,000 parts in 100,000 parts of water... 