 | Gardening - 1840 - 718 pages
...by humus on vegetation arises from its being " a continued source of carbonic acid, which it emits slowly. An atmosphere of carbonic acid, formed at...particle of decaying humus. The cultivation of land, by stirring and loosening the soil, causes a free and unobstructed access of air. An atmosphere of carbonic... | |
 | Agriculture - 1840 - 532 pages
...decay of woody fibre. It constitutes the principal part of all the strata of brown coal and peat. Humus is a continued source of carbonic acid, which it emits very slowly. Such is the chief function which Liebig ascribes to it in vegetation. There is no reason to believe... | |
 | 1841 - 536 pages
...Woody fibre, in a state of decay, is colled humut, and is tho principal t'iiLttittient in mould. Humus acts in the same manner in a soil permeable to air...very slowly. An atmosphere of carbonic acid formed at ''"<• expense ut the oxygen of the air surround» every particle of decaying l.:.niai. Tbc cultivation... | |
 | Periodicals - 1841 - 276 pages
...Woody fibre, in a state of decay, is called humus, and is the principal constituent in mould. Humus acts in the same manner in a soil permeable to air...it is a 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... | |
 | Periodicals - 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...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... | |
 | Charles Squarey - Agricultural chemistry - 1842 - 168 pages
...oxygen of the atmosphere, and as this process is carried on equally well in a soil permeable to the air, as in the air itself, it is a continued source of carbonic acid gas, which it emits very slowly, and which is thus enabled to be absorbed by plants growing near it.... | |
 | Justus Freiherr von Liebig, Lyon Playfair Baron Playfair - Agricultural chemistry - 1843 - 260 pages
...decay of woody fibre. Mould constitutes the prmcipal of all the strata of brown coal and peat. Humus acts in the same manner in a soil permeable to air...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... | |
 | Philip Lovell Phillips - 1845 - 126 pages
...permeable to air, the humus or vegetable matter contained in it acts, according to Liebig, in the same way as in the air itself; it is a continued source of...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 - Sugar growing - 1845 - 366 pages
...fibre. Humus furnishes Humus acts in the same manner in a soil percarbonic acid mable to air as in air itself, it is a continued source of carbonic acid,...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... | |
 | sir Louis Antoine A.G. De Verteuil - 1848 - 316 pages
...undergoing decay, the canes within range of its effects will be of fine growth. " Humus," says Leibig, " is a continued source of carbonic " acid which it...slowly. An atmosphere of " carbonic acid, formed at the exper.se of the air, sur. " rounds every particle of decaying humus. The culti'' vittion of land, by... | |
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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 air, surrounds every particle of decaying... 
