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Updated: June 19, 2025
This land was drained out at large expense, and produced two or three large crops because the fresh grass roots contained some readily available potassium; but after three or four years the corn crop became a complete failure, as you see from the untreated check plot on the right; while the land on the left, where potassium was applied, produced forty-five bushels per acre the year this photograph was taken, and with heavier treatment from sixty to seventy-five bushels are produced."
Such spots, as well also as most all others found on the plate after it has been exposed in the camera, can be removed by the following, solution: To one ounce of water add a piece of cyanide of potassium the size of a pea; filter the solution and apply by pouring it on the surface of the plate. In all cases the plate should first be wet with water.
The chemist had analyzed the soil separates for only four constituents, and they showed the following amounts per acre of plowed soil to a depth of six and two-thirds inches, averaging two million pounds in weight: 2,970 pounds of phosphorus 38,500 pounds of potassium 18,440 pounds of magnesium 46,200 pounds of calcium He then made the computations for the average of the Leonardtown loam of St.
But later, when he learned that his horses had been poisoned, he gave this package to a veterinarian. It was found to contain a powder, one ingredient of which was cyanide of potassium, a deadly poison, but which, blended with other things, may only cause severe illness. It was this poison that was administered to the horses." Once more came a murmur from the students.
I have here specimens of various bromides which can be employed, such as ammonium, potassium, barium, and zinc bromides; as a rule, however, either the ammonium or potassium salt is used, and I should like to say a few words respecting the relative efficiency of these two salts. As to ammonium bromide. This substance is a highly unstable salt.
But more than anything, with a hard and yet in its way humane realism which put any courage of mine in that direction to the blush, he was all for meditating on the state and nature of man, his chemical components chlorine, sulphuric acid, phosphoric acid, potassium, sodium, calcium, magnesium, oxygen and speculating as to which particular chemicals in combination gave the strange metallic blues, greens, yellows and browns to the decaying flesh!
Parinacochas water contains more carbonate and potassium than that of the Atlantic Ocean or the Great Salt Lake. As compared with the salinity of typical "salt" waters, that of Lake Parinacochas occupies an intermediate position, containing more than Lake Koko-Nor, less than that of the Atlantic, and only one twentieth the salinity of the Great Salt Lake.
Poisoning, as by hydrocyanic acid, cyanide of potassium, inhalation of carbonic acid or coal gas, oedema of glottis following inhalation of ammonia. Rapid onset of some acute specific disease, such as pneumonia or diphtheria; collapse from cholera. Heat-stroke, lightning, shocks of electricity of high tension. Mental or physical shock. Exertion while the stomach is overloaded.
This treatment consisted in dressing the cord with iodoform powder and antiseptic wool, the breast-feeding of the baby from the first, and the administration of one-grain doses of potassium bromid at short intervals. The infant death-rate on the island of St. Kilda has, consequently, been much reduced. The author suggests the use of a new iodin-preparation called loretin for dressing the cord.
I first tried an ointment composed of the iodine of potassium and lard, with some, but not a satisfactory result. Next I used the tincture of iodine, in doses of from five to ten drops, and with or without any external local application; but I found, at length, that the simple iodine, made into pills with powdered gum and syrup, effected almost all that I could wish.
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