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Updated: June 12, 2025
It is not very hard to remember that a four-ton crop of clover hay, which we ought to harvest from one acre in two cuttings, contains: 160 pounds of nitrogen, 31 pounds of magnesium, 20 pounds of phosphorus, 120 pounds of potassium, 117 pounds of calcium.
The older gray silt loam prairie, the most extensive soil of Southern Illinois, contains in two million pounds of soil: Potassium 24,940 pounds Magnesium 4,690 pounds Calcium 3,420 pounds Phosphorus 840 pounds These data represent averages involving hundreds of soil analyses, and they emphasize the fact that normal soils are rich in potassium and poor in phosphorus.
"He found the following: 1,030 pounds of nitrogen 1,270 pounds of phosphorus 16,500 pounds of potassium 7,460 pounds of magnesium 16,100 pounds of calcium "Well, the phosphorus is not so low," said Mr. West. "Fully equal to that in our $150 Illinois prairie," replied Percy, "and again the calcium is more than ours, with magnesium not far below, and potassium half our supply.
By the slow action of acidulated waters, the grey limestone deteriorated into a yellowish clay-bank, and now its particles are being re-united into solid rock by the deposit of calcium carbonate from the drip. A careful test of the temperature of the atmosphere showed it to be fifty-eight degrees.
Whether milk or any other substance containing lime makes fibrin deposits on the ulcerative surfaces more likely or more profuse, and therefore emboli more liable to occur, is perhaps an undeterminable question. In instances in which hemorrhages so frequently occur, as they do in this form of endocarditis, calcium is theoretically of benefit.
When it is known that the abandoned "Leonardtown loam" still contains in two million pounds of surface soil 18,500 pounds of potassium and only 1000 pounds of total calcium, the significance of these chemical and mathematical data must be apparent. The Liberation of Fertility
Sometimes two fluids unite together, and, in doing so, pass from the liquid into the solid form; as, e.g., sulphuric acid and chloride of calcium. Attraction of this nature is called chemical: it takes effect between dissimilar particles, and results in combinations with new properties.
They may be due to many substances, or to one; future research will perhaps decide; we can at present only say that the gaseous emission of the corona include none from hydrogen, helium, calcium, or any other recognisable terrestrial element.
Considerable heat is generated by the reaction, and the temperature of the tube during absorption serves as a rough index of the progress of the reaction through the mass of soda lime. It is essential that soda lime of good quality for analytical purposes should be used. The small quantity of moisture which is then carried out of the bulbs is held by the calcium chloride in the prolong tube.
The sulphuret of calcium will also kill them, so will the more dangerous white precipitate, or even a strong solution of carbolic acid, which must be used sparingly, however. The lice are hatched from nits, which we find clinging in rows, and very tenaciously too, to the hairs. The insects themselves are more difficult to find, but they are on puppies sometimes in thousands.
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