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Updated: May 18, 2025
A solution of bleaching-powder gives with solution of the sulphate a purple colour changing to red-brown. Symptoms. Nausea, vomiting, giddiness, intoxication, drowsiness, gasping for breath, feeble pulse, and marked cyanosis. In its industrial use it may act as a poison either by inhalation of the fumes or by absorption through the skin.
I consider the success of this experiment to be in a great measure owing to the use of soluble silica and magnesia; because, although there is an abundance of silica in the soil, my first crop showed very miserable results, the grain being ill-fed and poor, and the straw soft and discoloured, although the year 1842 was, in this district, very favourable for wheat, the month of August being singularly fine and warm; but when I combined the nitrate of soda with sulphate of magnesia, as in experiment No. 1 in 1843, but still more so when I combined it with the silicate of soda, as in No. 3 of that year, the straw became as strong, firm, and bright as need be desired; and this year when both these salts are combined with nitrate of soda, common salt, and gypsum, I have not only good and bright straw, but also an abundant crop of wheat.
Moreover, if we examine the positive electrode we shall find it slightly eaten away, because the sulphuric acid set free from the sulphate has combined with the particles of that wire to make new sulphate.
Add to this a few drops of a solution of iodine. Place this in a weak solution of iodine for a few minutes and then examine with the microscope, using first a low and then a high power. Dextrose, or Grape Sugar.—Place a solution of the substance supposed to contain grape sugar in a test tube and add a few drops of a dilute solution of copper sulphate.
Another portion of the same infusion of galls had solution of isinglass added to it until it no longer produced a precipitate; by employing the sulphate of iron, a black compound was produced, which, although paler than that formed from the entire fluid, appeared to be a perfect and durable ink.
Thus it is not really necessary to use basic aluminium sulphate for mordanting wool, since the latter itself decomposes the normal or neutral sulphate of alumina on heating, an insoluble basic sulphate being precipitated in the fibres of the wool. The presence of other added substances, as cream of tartar, etc.
"A Dover's powder, Deppy, or a few grains of quinine. Please be sensible. You're just like a child." "What's in a Dover's powder?" demanded the patient, who had never been ill in his life. "Ipecac and opium, sugar of milk or sulphate of potash. It's an anodyne diaphoretic," said Browne. "Opium, eh?" came sharply from the couch.
'Chloride of Lime' is a useful application for ill-conditioned wounds and for the frequent cleansing of the kennel. 'Epsom Salts', or 'Sulphate of Magnesia', are mild yet effective in their action: with regard to cattle and sheep, they supersede every other aperient; for the dog, however, they must yield to the castor-oil mixture.
Thilmany has patented still another combination, in which he uses sulphate of zinc and chloride of barium, which has been noticed under the head of burnettizing. Experiment No. 17 was tried on the Hudson River Railroad.
Moreover, at the boiling temperature, the ferric sulphate produced by the oxidation hydrolyzes in part with the formation of a basic ferric sulphate, which also tends to separate from solution. The nitric oxide is driven out by heat, and the solution then shows by its color the presence of ferric compounds.
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