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Updated: May 31, 2025
I still remember that the dative of indirect object is used with most Latin verbs compounded with ad, ante, con, in, inter, ob, post, pre, pro, sub, and super, and sometimes circum; but it would have been just as easy for me to have learned forty years ago that the essential elements of plant food are carbon, oxygen, and hydrogen; nitrogen, phosphorus, and potassium; magnesium, calcium, iron and sulfur; and possibly chlorin; and I am sure that the culture of Greek roots and a knowledge of Latin compounds have been of less value to me during the forty years than the culture of alfalfa roots and even a meager knowledge of plant-food compounds have been during the last three years.
Lloyd's discovery of the "death bacillus" of the sea toad, and his experiments on it with potassium cyanide, sent his name and that of his university ringing round the world; nor was Paul a whit behind when he succeeded in producing laboratory colloids exhibiting amoeba-like activities, and when he cast new light upon the processes of fertilization through his startling experiments with simple sodium chlorides and magnesium solutions on low forms of marine life.
The tendency of the magnesium precipitate to carry down molybdic acid is also increased if the solution is too concentrated. The slow addition of the reagent is essential, and the stirring not less so. Stirring promotes the separation of the precipitate and the formation of larger crystals, and may therefore be substituted for digestion in the cold.
"Rich in everything but nitrogen," Percy continued, "richer than our common prairies in phosphorus and calcium, and nearly as rich in potassium and magnesium; but very, very poor in nitrogen.
Magnesium is found principally as phosphate in the bones. It is present both in animal and vegetable foods. Its function in the body is not well understood, but it appears to assist the phosphorus. Silicon is found in traces in the human body.
The charcoal packing behind the carbon plates is required to confine the heat and to protect them from combustion. With this furnace, aluminum can be reduced directly from its ores; and chemical compounds from corundum, cryolite, clay, etc., and silicon, boron, calcium, manganese, magnesium, and other metals are in like manner obtained from their ores and compounds.
These substances would not be built up from the elements of water, ammonia, and carbonic acid gas, after the decomposition of this last; they would be formed where they are found in the cells themselves, by some process of union between the carbo-hydrates imported by the sap, and the phosphates of potassium and magnesium and salts of ammonia.
Use hmmm sodium copper magnesium aluminium, iron and chromium. Got it?" "Yes, sir." He left, just as Devin returned with a large electrostatic voltmeter. "I'd like," said he, "to know how you know the voltage will range around eighty thousand." "K-ring excitation potential for mercury.
About 600 pounds an acre every four years is a good application. The kainit will not only furnish soluble potassium and magnesium but will also help to dissolve and thus make available other mineral plant food naturally present or supplied, such as natural phosphates.
At Lagshung, the evening before, the Tibetans made prayers and offerings for a day cloudy enough to keep the water down, but in the morning from a cloudless sky a scintillating sun blazed down like a magnesium light, and every glacier and snowfield sent its tribute torrent to the Shayok.
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