Studies in Plant And Organic Chemistry And Literary Papers
The book Studies in Plant And Organic Chemistry And Literary Papers was written by author Helen Abbott Michael Here you can read free online of Studies in Plant And Organic Chemistry And Literary Papers book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Studies in Plant And Organic Chemistry And Literary Papers a good or bad book?
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, ser. V, xiii; also Agronomic, VI, 1878. Mayer, Landwirthschajtl. Versuchs-Stat. , xvii, 1874. CHEMICAL BASIS OF PLANT FORMS 239 the especial absorptive function of leaves is the absorption of gases, as has been already explained. The subject of the ash-constituents of plants is a very impor- tant one in this connection. The essential mineral constituents of plants have already been mentioned; silicon, fluorine, manga- nese, sodium, lithium, rubidium, caesium, barium, aluminium, zinc, copper, ...titanium, iodine, and bromine have also been found among the ash ingredients of certain plants. The method of absorption of soluble mineral salts has already been described. A solution of insoluble salts is brought about in a different way. A soil rich in organic matter is always charged with carbon- dioxide, and this gas is also given off by the roots of living plants. Water containing this gas is able to dissolve calcium carbonate and some silicates that are insolu- ble in pure water. The presence of certain soluble salts in the soil brings about a decomposition and renders the insoluble salts more readily soluble.
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