Hydrodynamic imitation of electric pheno
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Article
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1883
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Elsevier Science
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English
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Widenb~g of the Hydrogen Rays. 71 The Stone Age in China.--The annals of the Tung dynasty, which was established A.D. 618, speak of stone axes, knives and swords. The annals of the Youen dynasty (A. D. 1260 to 1341) mention soldiers who used stone arrows in fighting. In a Chinese dictionary which wa