. The nature and properties of soils; a college text of edaphology. Soils. THE ORGANIC MATTER OF THE SOIL 101 mineral matter or so-called ash exists as a part of the com- pounds listed under these headings. The carbohydrates, hav- ing the general formula of Cx(H20)n include such compounds as starch, cellulose, dextrose, glucose, cane sugar, and the like. The fats and oils may be represented in plants by such glycer- ides as butyrin, stearin, olein, palmitin, while many acids of an organic nature exist especially in fruits and ¥m. 20.—^Diagram showing the general composition of gre
. The nature and properties of soils; a college text of edaphology. Soils. THE ORGANIC MATTER OF THE SOIL 101 mineral matter or so-called ash exists as a part of the com- pounds listed under these headings. The carbohydrates, hav- ing the general formula of Cx(H20)n include such compounds as starch, cellulose, dextrose, glucose, cane sugar, and the like. The fats and oils may be represented in plants by such glycer- ides as butyrin, stearin, olein, palmitin, while many acids of an organic nature exist especially in fruits and ¥m. 20.—^Diagram showing the general composition of green plant tissue. The nitrogen which is generally less than .5 per cent, is included with the ash in the above diagram. (After Stoddard.) Of the five groups, however, the nitrogenous compounds are probably the most complicated as they carry not only carbon, hydrogen, oxygen, and nitrogen, but also mineral elements such as sulfur, phosphorus, calcium and iron. They are com- pounds of high molecular weight and many are of unknown IV. Organic acids and their salts—Citric acid, malic acid, tannic acid, tartaric acid, and the like. v. Mtrogenous compounds—^Nitrates, ammonia, amides, amino-acids, alkaloids, and 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 Lyon, T. L. (Thomas Lyttleton), 1869-1938; Buckman, Harry Oliver, 1883-. New York, Macmillan
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Keywords: ., bookauthorlyontlth, bookcentury1900, bookdecade1920, bookyear1922
