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" ... in which all kinds of plants grow with the greatest luxuriance. This fertility is owing to the alkalies which are contained in the lava, and which, by exposure to the weather, are rendered capable of being absorbed by plants. Thousands of years have... "
Report of the Commissioner of Agriculture for the year 1864 - Page 23
by washington: Government Printing Officee - 1865
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The Farmer's Magazine

1842 - 1036 pages
...their excess to the latter. " Thousands of years have been necessary to convert stones and rocks into the soil of arable land and thousands of years more will be necessary for their complete reduction, that is, for the complete exhaustion of their alkalies. We...
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Organic Chemistry in Its Applications to Agriculture and Physiology

Justus Freiherr von Liebig, Lyon Playfair Baron Playfair - 1840 - 414 pages
...of being absorbed by plants. Thousands of years have been necessary to convert stones and rocks into the soil of arable land, and thousands of years more will be requisite for their perfect reduction^ that is for the complete exhaustion of their alkalies. We see...
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Southern Quarterly Review, Volume 26

Daniel Kimball Whitaker, Milton Clapp, William Gilmore Simms, James Henley Thornwell - 1854 - 588 pages
...of being absorbed by plants. Thousands of years have been necessary to convert stones and rocks into the soil of arable land, and thousands of years more will be required for their perfect reduction — that is, for the complete exhaustion of their alkalies. Air, water, and the change...
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Chemistry in Its Application to Agriculture and Physiology

Justus Freiherr von Liebig, Lyon Playfair Baron Playfair - 1842 - 450 pages
...of being absorbed by plants. Thousands of years have been necessary to convert stones and rocks into the soil of arable land, and thousands of years more will be requisite for their perfect reduction, that is, for the complete exhaustion of their alkalies. We see...
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Chemistry in Its Application to Agriculture and Physiology

Justus Freiherr von Liebig, Lyon Playfair Baron Playfair - 1843 - 260 pages
...of being absorbed by plants. Thousands of years nave been necessary to convert stones and rocks into the soil of arable land, and thousands of years more will be requisite for their perfect reduction, that is, for the complete exhaustion of their alkalies. We see...
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Chemistry in Its Applications to Agriculture and Physiology

Justus Freiherr von Liebig, Lyon Playfair Baron Playfair - 1843 - 446 pages
...of being absorbed by plants. Thousands of years have been necessary to convert stones and rocks into the soil of arable land, and thousands of years more will be requisite for their perfect reduction, that is, for the complete exhaustion of their alkalies. lets,...
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Agricultural Chemistry

George Cox (Optician) - 1844 - 152 pages
...sulphates and phosphates, " Thousands of years have been necessary to convert stones and rocks into the soil of arable land, and thousands of years more will be required for their perfect reduction, that is, for the complete exhaustion, of their alkalies." The cause of the fertility...
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European Agriculture and Rural Economy from Personal Observation, Volume 1

Henry Colman - 1844 - 572 pages
...of being absorbed by plants. Thousands of years have been necessary to convert stones and rocks into the soil of arable land ; and thousands of years more will be requisite for their perfect reduction — that is, for the complete exhaustion of their alkalies."...
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European Agriculture and Rural Economy, Volume 1

Henry Colman - 1851 - 528 pages
...of being absorbed by plants. Thousands of years have been necessary to convert stones and rocks into the soil of arable land ; and thousands of years more will be requisite for their perfect reduction — that is, for the complete exhaustion of their alkalies."...
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Annual Report of the Commissioner of Patents

United States. Patent Office - 1852 - 854 pages
...of being absorbed by plants. Thousands of years have been necessary to convert stones and rocks into the soil of arable land, and thousands of years more •will be required for their perfect reduction — that is, for the complete exhaustion of their alkalies. Air, water, and the change...
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