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1 Atmospheric Pressure, 1 2 Atmospheric Pressure, 2 3 The Torricellian Vacuum 4 The Ventilation of Coal Mines 5 The Construction of the Atom Illustrated 6 Capillary Action 7 Making Coal Gas 8 Combustion, 1 9 Combustion, 2 10 The Parts of a Candle Flame 11 The Interior of a Flame 12 The Ignition Point of Inflammable Gas 13 Crystallization 14 Diffusion of Gases 15 Heat Causes Liquids And Solids to Expand 16 Making Hydrogen 17 Unreflected Light is Invisible 18 Finding the Relative Illuminating Power ยช 19 Liquid Air and Alcohol 20 Liquid Air and Ice 21 The Line of Forces in a Magnetic Field 22 Sound Waves 23 The Composition of Water 24 The Decomposition of Water 25 Water a Bad Conductor of Heat |