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Cloth covers may be washed with a sponge dipped in a mixture made from the white of an egg beaten to a stiff froth and afterwards allowed to settle. To clean grease marks from books, dampen the marks with a little benzine, place a piece of blotting-paper on each side of the page, and pass a hot iron over the top. Dissolve 1 oz. of oxalic acid in one pint of soft water.
If these treatments are ineffectual, resort to diluted oxalic acid or Javelle water, a careful rinsing to follow the application. Grass stains may be treated in a like manner, or washed in alcohol. Ammonia and water, applied while the stain is fresh, will often remove it. Remove paint stains with benzene or turpentine, machine oil with cold water and Ivory soap, vaseline with turpentine.
That's all I can say. Looks as if she took poison. Oxalic acid." "Oxalic acid!" "Now, see here, sir. You've no call to say anything to me and I've no call to say more to you than I've told you. Is that your cab, sir? Because if so " They went to the cab. One of two questions is commonly the first words articulated by one knocked senseless in a disaster.
And the end was quicker than nothing. Twyning pulls Humpo's coat and points at Sabre's hat, soft hat, on the ledge before him. Humpo nods, delighted. "'And did she carry out her intention, sir? Did she clean your straw hat for you? "Nods. "'You don't appear to be wearing it? "Shakes. "'Pray, where, then, is this straw hat to clean which you obtained the oxalic acid? Is it at your house?
If we cut across a stalk of the garden rhubarb, we can see, with the aid of a microscope, the fine needle-shaped crystals of oxalate of potash lying among the fibres of the plant, a provision for an extra supply of the oxalic acid which is the source of the intense sourness of this vegetable.
I suppose I turned ghastly pale, for I felt a terrible nausea suddenly overcoming me. Black and my other friends in a state of consternation examined the bottle from which I had been served, and discovered that although it bore the label of a well-known brand of whisky, it contained turpentine. I confess I was relieved when I heard this, as I feared it might have been oxalic acid.
Stains can be removed from marble, by oxalic acid and water, or oil of vitriol and water, left on a few minutes, and then rubbed dry. Gray marble is improved by linseed-oil. It improves the looks of marble, to cover it with this mixture, leaving it two days, and then rubbing it off.
Two pints of spring water were then poured into the saucepan, and to this were added 1 ounce of oxalic acid, 1 ounce of verdigris, 1-1/2 ounces of hemlock leaves, 1/2 ounce of henbane, 3/4 ounce of saffron, 2 ounces of aloes, 3 drachms of opium, 1 ounce of mandrake-root, 5 drachms of salanum, 7 drachms of poppy-seed, 1/2 ounce of assafoetida, and 1/2 ounce of parsley.
It is also desirable that a sufficient excess of the acid should be present to react with a considerable volume of the permanganate solution during the titration, thus increasing the accuracy of the process. On the other hand, the excess of oxalic acid should not be so large as to react with more of the permanganate solution than is contained in a 50 cc. burette.
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