 | Justus Freiherr von Liebig, Lyon Playfair Baron Playfair - 1840 - عدد الصفحات: 420
...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 - عدد الصفحات: 274
...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 - عدد الصفحات: 276
...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 - عدد الصفحات: 450
...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 - عدد الصفحات: 770
...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 - عدد الصفحات: 446
...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 - عدد الصفحات: 260
...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 - عدد الصفحات: 424
...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 - عدد الصفحات: 126
...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 - عدد الصفحات: 366
...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... 
