Artificial diamonds
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Article
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1878
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Elsevier Science
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English
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~ofeguards against Boiter .~plosions. ## ~49 Safeguards against Boiler Explosions.--In the Congress of Civil Engineers, at the Paris Exposition, Testud de Beauregard suggested the use of suitable thermometers or galvanometers to give tilnely warning of any dangerous disturbance of thermal equilib