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The result is a half section of the boat; the other symmetrical half is easily obtained. If the whole process is repeated for the other side of the boat, tracing paper being used instead of drawing paper, the boat may be tested for symmetry of building, a good control for the value of the ship. Neuste Erfindungen und Erfahrungen.
Hermann Kratzer, of Leipsic, communicates the following practical information on the clarification and purification of vinegar to the Neueste Erfindungen und Erfahrungen: If vinegar has an unpleasant odor, which is rarer now that the vinegar manufacture has reached such a state of perfection, it may be removed as follows: Well burned and finely pulverized wood charcoal is put into the bottles containing the vinegar, the proportions being 8 grammes of charcoal to a liter of vinegar, or one ounce to the gallon.
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