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First, stain in tallow, then take of spirits of turpentine 1 pint, cream of tartar 1 oz., soda 1 oz., gum shellac 1/2 oz., thick paste reduced thin 2 qts. Mix well. This will finish 24 sides. The antidotes for poisoning with the strong mineral acids, such as nitric, muriatic, sulphuric, or oxalic acids are magnesia, chalk, whiting, in milk or water; mucilaginous or soapy liquids.
Apply spirits of salt with a rag, until the spot disappears, and immediately wash with clean water; or to half a pint of soft water put 1 oz. of oxalic acid, and 1/2 oz. of butter of antimony; shake it well, and when dissolved it will be very useful for extracting stains out of mahogany, as well as ink, if not of too long standing. TO CLEAN MARBLE, SIENNA, JASPER, PORPHYRY, &c.
Hydrochloric acid has the advantage of forming soluble compounds with the alkaline earths, but its solutions cannot be boiled without danger of loss of strength; sulphuric acid solutions may be boiled without loss, but the acid forms insoluble sulphates with three of the alkaline earths; oxalic acid can be accurately weighed for the preparation of solutions, and its solutions may be boiled without loss, but it forms insoluble oxalates with three of the alkaline earths and cannot be used with certain of the indicators.
But perhaps you want oxalic acid. It is oxalic acid, isn't it?" Binet explained that he wanted a corrosive to make himself some copperwater with which to remove rust from his hunting things. Emma shuddered. The chemist began saying "Indeed the weather is not propitious on account of the damp." "Nevertheless," replied the tax-collector, with a sly look, "there are people who like it."
Harlow had on an old straw hat that his wife had cleaned up with oxalic acid, and Easton had carefully dyed the faded binding of his black bowler with ink. Their boots were the worst part of their attire: without counting Rushton and his friends, there were thirty-seven men altogether, including Nimrod, and there were not half a dozen pairs of really good boots amongst the whole crowd.
It is equally possible, if preferred, to standardize the alkali solution. The oxalic acid and the oxalates should be specially prepared to insure purity, the main difficulty lying in the preservation of the water of crystallization.
KMnO = 0.2004 gram Na C O . Calculate the percentage of sulphide sulphur in the sample. !Answer!: 0.050%. What weight of pyrolusite containing 89.21% MnO will oxidize the same amount of oxalic acid as 37.12 cc. of a permanganate solution, of which 1 cc. will liberate 0.0175 gram of I from KI? !Answer!: 0.2493 gram.
Oxalic acid is a product of oxidation in living cells, and has strong poisonous properties. To get rid of it, the chemist inside the body, by the aid of calcium salts, forms insoluble compounds of it, and thus casts it out. To separate substances from each other by filtration, or by shaking with suitable liquids, is one of the daily tasks of the chemist.
A tumbler was on a small table and a bottle of oxalic acid, "salts of lemon, as they call it," said the man. Sabre stared out of the window. "Effie has killed herself. Effie has killed herself and her baby." No, he could not fasten upon it. "Effie has killed herself." That was what this man was telling him.
But what microscope or what alembic shall ever tell us why a collection of tubes and cells in one tree creates the most wholesome and delicious fruit, while in another an organization precisely similar, so far as we can discern, produces only harsh and poisonous berries? why the acacia tribe elaborate their gum, the pine family turpentine, the almond prussic acid, the sorrels oxalic acid? why the tall calisaya-tree of the Andes deposits in its bark the valuable medicine cinchona, and the oak, the hemlock, the tea-plant, and many others, make use of similar repositories to lay up stores of tannic acid?
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