Vietnam or Thailand ? Vote for the TOP Country of the Week !
Updated: April 30, 2025
"Thank you, Mr. Harding, good morning." His eyes were roving restlessly about the room, and he dictated the work the photographer was to do with scrupulous care. Half a dozen times a dazzling flash of magnesium powder lit up the place. Photographs of the room in sections were being taken.
Then he says to himself, "Well, if we are eating already, I certainly can't get away." The student to whom he gave the instruction is a particularly unpleasant fellow; he had said to the chemist: "That isn't right," because the magnesium was still unaffected, and the latter answered as though he did not care anything about it: "It certainly isn't right."
Flooded with the brilliant white light of magnesium ribbon, the crevice walls could be seen drawing together at a height of sixty-five feet, and both composed entirely of larger box work than any seen before and very heavily covered with calcite crystal, colored a bright electric blue and glowing with a pearly lustre.
=Chloride of Barium= occurs crystallized in irregular plates, like magnesium sulphate, soluble in water and bitter in taste. =Carbonate of Barium= is found in shops as a fine powder, tasteless and colourless, insoluble in water, but effervescing with dilute acids, and readily decomposed by the free acids of the stomach. =Nitrate of Barium= occurs in octahedral crystals, soluble in water.
On the other hand the other six elements of plant food are contained largely in the mineral part of the soil, as the clay, silt, and sand. thus the iron, calcium, magnesium, and potassium, all of which are called abundant elements, are contained in the mineral matter, and usually in considerable amounts, while they are found in the organic matter in very small proportion.
A careful consideration of the trustworthy data clearly reveals the fact that potassium is very abundant in normal soils, while phosphorus is relatively very deficient; and, all things considered, calcium and probably magnesium is of much greater significance than potassium, from the standpoint of the maintenance of usable plant food in the soil.
This was Form No. 1, the first I had ever seen. It looked as material as myself; and on a subsequent occasion for I have seen it several times we took four very good photographic portraits of it by magnesium light. The difficulty I still felt, with the form as with the faces, was that it seemed so thoroughly material and flesh-and-blood like.
The average annual loss by leaching from good soils in humid sections is known by the results of many analyses to be about as follows per acre: Potassium 10 pounds Calcium 300 pounds Phosphorus 2 pounds The average annual loss of magnesium in drainage water from good soils is probably 30 pounds or more an acre, but the data thus far secured are inconclusive with respect to that element.
From the analysis shown it will be perceived that the chlorides of sodium and magnesium are in great preponderance. It is to the former of these that the baneful effects of sea water when drunk are to be ascribed, for chloride of sodium or common salt produces thirst probably by its styptic action on the salivary glands, and scurvy by its deleterious action on the blood when taken in excess.
Now the Bromide of Magnesium, and Sulphate and Carbonate of Lime, occur in such small quantities, that they can be safely omitted in making artificial seawater; and besides, river and spring water always contain a considerable proportion of lime. Therefore, according to Mr.
Word Of The Day
Others Looking