 Finally, it has been maintained by some that a soil is a laboratory, and not a mine. But not only the facts ascertained in our own and in other investigations, but the history of agriculture throughout the world, so far as...  The Farm... - Page 162by Eugene Davenport - 1927 - 462 pagesFull view - About this book
 | Chemical Society (Great Britain) - 1885 - 956 pages
...carbon, and a low relation of carbon to nitrogen. In conclusion, it has been maintained by some that a soil is a laboratory and not a mine, but not only the facts adduced in this and in former papers, but the history of agriculture throughout the world, so far as... | |
 | Michigan. State Board of Agriculture - 1884 - 482 pages
...of carbon, and u Jow relation of carbon to nitrogen. Finally, it has been maintained by somc that a soil is a laboratory, and not a mine. But not only...history of agriculture throughout the world, so far as we know it, clearly show that a fertile soil is one which has accumulated within it the residue of... | |
 | 1886 - 556 pages
...of carbon, and a low relation of carbon to nitrogen. Finally, it has been maintained by some that a soil is a laboratory, and not a mine. But not only...history of agriculture throughout the world, so far as we know it, clearly show that a fertile soil is one which has accumulated within it the residue of... | |
 | Rothamsted Experimental Station - 1890 - 692 pages
...carbon, and a low relation of carbon to nitrogen. In conclusion, it has been maintained by some that a soil is a laboratory and not a mine, but not only the facts adduced in this and in former papers, but the history of agriculture throughout the world, so far as... | |
 | JOHN BENNET LAWES, AND JOSEPH HENRY GILBERT - 1893 - 694 pages
...carbon, and a low relation of carbon to nitrogen. In conclusion, it has been maintained by some that a soil is a laboratory and not a mine, but not only the facts adduced in this and in former papers, but the history of agriculture throughout the world, so far as... | |
 | Sir Joseph Henry Gilbert - 1895 - 338 pages
...nitrogen and of carbon and a low relation of carbon to nitrogen. It has sometimes been maintained that a soil is a laboratory and not a mine. But not only...history of agriculture throughout the world so far as it is known, clearly show that a fertile soil is one which has acciimulatcd within it the residue of... | |
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