The Spirit of the Soil Or An Account of Nitrogen Fixation in the Soil By Bacte
The Spirit of the Soil Or An Account of Nitrogen Fixation in the Soil By Bacte
Gordon Daniell Knox
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60-74 60-37 5-13 5'39 34-13 34-24 This does not mean that a real formula can be written for Humic acid, for it is well known that the Carbon content of Humic acid does vary with the substances from which it has been prepared, but it emphasizes that a very close similarity exists between HUMUS 77 the Humic acid obtained from peat and one of the Humic acids artificially prepared. Now in the ordinary decomposition of cellulose it cannot be expected that Hydrochloric acid would be present, but as a... result of decomposition a large number of organic acids would naturally be formed, and tests carried out with Lactic, Acetic, Propionic, Butyric, Citric, Tartaric, and Oxalic acids on Sucrose, Dextrose, and Laevulose, all showed that the sugars or carbohydrates went through the same colour changes as had been observed with Hydro- chloric acid, and gave rise both to Humic acid and Humin. In other words, it was demonstrated that it was reasonable to suppose that the natural process by which Humic acid and the Humin were formed in peat from carbohydrates had been successfully imitated in the laboratory.
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