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Updated: June 16, 2025
The principal methods which comply with these demands have been carefully studied by Hueble for the purpose of discovering a process of general application; methods founded on the determination of density, freezing, and melting point were compared with those dependent on the solubility of fatty substances in glacial acetic acid or a mixture of alcohol and acetic acid; also the method of Hehner for testing of butter, the determination of glycerine and oleic acid, and at length the process of saponification.
The acid will dissolve magnesium pyrophosphate from the surface of the particles of carbon, which will then burn away. Nitric acid also aids as an oxidizing agent in supplying oxygen for the combustion of the carbon. The magnesium ammonium phosphate is readily dissolved by acids, even those which are no stronger than acetic acid.
They then absorb these solutions for the nourishment of the plant. The acid given out was first thought to be carbonic acid, but now it is supposed by some experimenters to be acetic acid, by others to vary according to the plant and the time. The action can be shown by the following experiment, suggested by Sachs. I. Seedling of Sinapis alba showing root-hairs.
"Beg your pardon," said Hetty, as sweetly as her dilute acetic acid tones permitted, "but did you find that onion on the stairs? There was a hole in the paper bag; and I've just come out to look for it." The young man coughed for half a minute. The interval may have given him the courage to defend his own property.
Recent information reveals a further widening of their basis of operation, including a strong hold on the electro-chemical industry and on the new synthetic processes from carbide, for acetic acid and the other products normally obtained by wood distillation. Again, the policy of the I.G. appears to have moved towards more complete unity since the war.
The stratum of ether decanted off is mixed in a test-tube with a drop of acetic acid. A red color appears if the slightest trace of magenta is present. The shaking must not be too violent, lest an emulsion should be formed. If the wine is colored with archil, on prolonged heating, after the addition of ammonia, it is decolorized. If it is then let cool and shaken a little, the red color returns.
Where the swelling shews undoubted signs of diseased matter below the surface, it may be opened as above directed. We know of limbs that have been long distorted, and under rubbing and fomenting they are becoming gradually all they ought to be. No one need fear that by such treatment they will grow worse. See Armpit Swelling; Bone, Diseased; Knee; Limbs, Inflamed, etc. Acetic Acid.
Nostrils, The. The disease called Polypus, affecting the mouth or nostril with growths which are usually removed by force, is one of those troubles curable by proper use of vinegar or weak acetic acid. The extraction of the Polypi is painful, and we have ourselves seen them so completely cured, that it is a pity not to make very widely known a method of avoiding extraction.
It is similar in appearance, but differs in that it melts at about 50° C., and is soluble in glacial acetic acid, which is not the case with the substance from the oil. These fatty acids crystallize on cooling, in a most characteristic and beautiful way, forming wavy circular plates totally unlike any that I have seen before.
On opening the abdomen, the viscera appeared quite healthy: the stomach was removed, and the contents were found to be more decidedly acid than usual. The acids were the muriatic and acetic: the finding of an increased quantity of these is far from being unusual. There was not a trace of arsenical, mercurial, nor any other metallic poison present.
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