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Updated: May 12, 2025
Light a splinter and, slipping the cover to one side, thrust the flame into the jar of nitrogen, noting the effect. What purpose is served by each in the atmosphere? Phosphorus.—Examine a small piece of phosphorus, noting that it has to be kept under water. Lay a small piece on the table and observe the tiny stream of white smoke rising from it, formed by slow oxidation.
It may gain in nitrogen by the wastes of the plant, but it will lose in other constituents unless reinforced by fertilization. No single act can make for the maintenance of the soil as the growing and feeding of crops and return of manure does. Dry-Land Alfalfa. I am in a country of strictly dry farming.
Through these spongy lungs of ours we lay hold upon the outward world in the most intimate and constant way. Through them we are rooted to the air. The air is a mechanical mixture of two very unlike gases nitrogen and oxygen; one very inert, the other very active. Nitrogen is like a cold-blooded, lethargic person it combines with other substances very reluctantly and with but little energy.
"It must be a powerful medicine," said one of the bystanders. "I wonder what it is." "I will explain to you my notion," said Professor Moissan, the great French chemist. "I think it was a pill of the air, which he has taken." "What do you mean by that?" Artificial Atmosphere. "My meaning is," said Professor Moissan, "that the Martian must have, for that he may live, the nitrogen and the oxygen.
"First, when those classic experiments were begun by Sir John Lawes and Sir Henry Gilbert in 1844, it was not known that clover could secure the free nitrogen from the air; and, second, the experiment was designed to discover for certain whether wheat must be supplied with combined nitrogen, by ascertaining the actual effect upon the yield of wheat of the nitrogen applied."
Salts and nitrogenous foods are essential to life. Hydrogen is a very light gas, without odor, taste or color. It is a necessary constituent of all growing, living things. It is plentifully supplied in water. All acids contain hydrogen and so does the protoplasm of the body. Nitrogen is also a colorless, tasteless, odorless gas.
If we add the carbon and nitrogen of the leaves of the beetroot, and the stalk and leaves of the potatoes, which have not been taken into account, it still remains evident that the cultivated fields, notwithstanding the supply of carbonaceous and nitrogenised manures, produced no more carbon and nitrogen than an equal surface of meadow-land supplied only with mineral elements.
They do so rather feebly, I admit; but, as if to make up to them for the small amount of the air placed at their disposal, it contains more oxygen than that we breathe ourselves, because oxygen, dissolving more readily in water than nitrogen, is there in greater proportion. Of course, you do not suppose that fishes have lungs like ours?
Yet this phrase is a mere commonplace in our speech. A man no more overcomes his circumstance than oxygen overcomes nitrogen when it combines with it to form the air we breathe. If the nitrogen is present, the combination takes place; but if there is no nitrogen to be had, all the oxygen in the world will not produce our blessed atmosphere!"
A farmer in Missouri had a good stand of corn which promised all through the summer to produce an excellent crop. Abundance of sun and rain favored the farmer's hope that his returns would be large, but in the fall the crop proved a failure. The farmer at once cast about for the cause of this disappointment. He had his soil analyzed by a scientist and discovered that it was deficient in nitrogen.
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