Heat of the electric arc
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C.
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Article
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1880
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Elsevier Science
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English
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## Gum Arabic Solution.--The adhesiveness and durabill V of u solution of 100 parts gum arable in 250 parts water may be increased by adding 2 parts of sulphate of alumina.--Polytech. Notlzbl. C. Artificial Quartz Crystals.--M~l. Friedel and Sarrazim have obtained quartz crystals by the aetlon o