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1. Anon, Physics[1] The Spectrum of the Aurora[2] The Aurora and Earth-Currents[3] Determination of the Mechanical Equivalent of Heat[4] Determination of the Ratio of the Two Specific Heats of Gases[5] A New Method of Calorimetry[6] Attraction and Repulsion Caused by Vibration, Academy, 2 (1870–71), 44–45.