Publisher's Synopsis
Excerpt from The Food of Crops and How to Apply It: An Elementary Handbook on the Science and Practice of Manuring
By proceeding a step further, and submitting the dried plant tissue to a higher temperature, we find that it speedily blackens, While smoke is given off. This blackening indicates to the eye of the chemist the presence of the element carbon. If we steadily raise the temperature to a red heat, the carbon gradually disappears, until all that remains, after a time, of the plant substance is a. Small amount of ash.
The dry matter of plants can thus be divided into two portions - one which we can burn away, and which is by lat the larger portion; and one which withstands the cwtinn of heat. This combustible portion is generally called the organic matter, while to the incombustible portion the terms inorganic or mineral matter have been applied.
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