. The chemistry of agriculture, for students and farmers. Agricultural chemistry. BACTERIA 141 plant debris and fragments of animals, insects, and worms, in all stages of decomposition, ranging from their original condition and easily recognizable, down to the nnrecognizable pieces and the amorphous, waxy coating on soil grains. The whole mass of soil material, which at one time or another was a part of living organisms, is called orc/anic matter. Organic matter in the process of decomposition, which is changing continually and breaking down into new compounds, may be called active organic mat
. The chemistry of agriculture, for students and farmers. Agricultural chemistry. BACTERIA 141 plant debris and fragments of animals, insects, and worms, in all stages of decomposition, ranging from their original condition and easily recognizable, down to the nnrecognizable pieces and the amorphous, waxy coating on soil grains. The whole mass of soil material, which at one time or another was a part of living organisms, is called orc/anic matter. Organic matter in the process of decomposition, which is changing continually and breaking down into new compounds, may be called active organic matter. That particular part of it. ^^#:^ Fig. 32.—Soil and subsoil, showing dark color due to organic matter. (Weir.) which is completely decomposed, which has lost all resem- blance to living matter, and which is indistinguishable among the soil grains, except that it gives the dark color to them, may be called inactive organic matter or humus. 119. Bacteria.—As soon as a portion of a living organism dies, whether it be a leaf, or bit of bark, or mass of roots, it is at once attacked by bacteria which are everywhere present in the soil. Inasmuch as bacteria are of such vital impor- tance to agriculture, both beneficially and otherwise, a brief description of them is Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Stoddart, Charles William, 1877-. Philadelphia, New York, Lea & Febiger
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Keywords: ., bookcollectionam, booksubjectagriculturalchemistry, bookyear1915
