 | Justus Freiherr von Liebig, Lyon Playfair Baron Playfair - 1840 - 420 pages
...permeable to air as in the air itself; it is a continued source of carbonic acid, which it emits very slowly. An atmosphere of carbonic acid, formed at...particle of decaying humus. The cultivation of land, by tilling and loosening the soil, causes a free and unobstructed access of air. An atmosphere of carbonic... | |
 | 1841 - 274 pages
...perinc'able to air as in tuo air itself; it is ft continued source of carbonic acid, which it emit* very slo-wly. An atmosphere of carbonic acid formed at...oxygen of the air surrounds every particle of decaying huniu*. The cultivation of laud by tilling and loosening the soil, causes a free ami unobstructed access... | |
 | 1841 - 276 pages
...continued source of carbonic acid, which it emin very slowly. An atmosphere of carbonic acid farmed at the expense of the oxygen of the air surrounds every particle of decaying hmuus. The cultivation of land by tilling and loosening the soil, causes a tree nnd unobstructed access... | |
 | Justus Freiherr von Liebig, Lyon Playfair Baron Playfair - 1842 - 450 pages
...permeable to air as in the air itself; it is a continued source of carbonic acid, which it emits very slowly. An atmosphere of carbonic acid, formed at...particle of decaying humus. The cultivation of land, by tilling and loosening the soil, causes a free and unobstructed access of air. An atmosphere of carbonic... | |
 | Justus Freiherr von Liebig, Lyon Playfair Baron Playfair - 1843 - 446 pages
...permeable to air as in the air itself; it is a continued source of carbonic acid, which it emits very slowly. An atmosphere of carbonic acid, formed at...particle of decaying humus. The cultivation of land, by tilling and loosening the soil, causes a free and unobstructed access of air. An atmosphere of carbonic... | |
 | 1843 - 770 pages
...permeable to air as in the air itself; it is a continued source of carbonic acid, which it emits very slowly. An atmosphere of carbonic acid, formed at...particle of decaying humus. The cultivation of land, by tilling and loosening the soil, causes a free and unobstructed access of air. An atmosphere of carbonic... | |
 | Justus Freiherr von Liebig, Lyon Playfair Baron Playfair - 1843 - 260 pages
...permeable to air as in the air itself; it is a continued source of carbonic acid, which it emits very slowly. An atmosphere of carbonic acid, formed at the expense of the air, surrounds every particle of decaying humus. The cultivation of land, by tilling and loosening... | |
 | 1845 - 424 pages
...permeable to air as in the air itself; it is a continued source of carbonic acid, which it emits very slowly. An atmosphere of carbonic acid, formed at...particle of decaying humus. The cultivation of land, by tilling and loosening the soil, causes a free and unobstructed access of air. An atmosphere of carbonic... | |
 | Philip Lovell Phillips - 1845 - 126 pages
...in the same way as in the air itself; it is a continued source of carbonic acid which it emits very slowly. An atmosphere of carbonic acid, formed at...every particle of decaying humus. The cultivation of the land by tilling and loosening the soil, causes a free and unobstructed access of air. An atmosphere... | |
 | W F. Whitehouse - 1845 - 366 pages
...acid mable to air as in air itself, it is a continued source of carbonic acid, which it emits very slowly. An atmosphere of carbonic acid, formed at...the air, surrounds every particle of decaying humus. Use of plough,ng . The cultivation of land, by tilling and loosening the soil, causes a free and unobstructed... | |
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Humus acts in the same manner in a soil permeable to air as in the air itself; it is a continued source of carbonic acid, which it emits very slowly. An atmosphere of carbonic acid, formed at the expense of the oxygen of the air, surrounds every particle... 
