Calendar: 1865-1866 Page 291

EVENING CLASSES VII Constitution of Gases Weight of Gases Expansion and Compression Pressure of Gases Law of Boyle and Mariotte The Air Pump Hero's Fountain VIII The Effects of Heat on Bodies Thermometers Density of Gases Relation between pressure temperature and density of Gas Cooling of Gases by expansion The mixture of Gases IX Pressure of the Atmosphere Magdeburgh Hemi- spheres Balloons Mariotte's Bottle &c Baro- meters Variations in the height of the Barometer Determination of heights by means of the Baro- meter Decrement of Temperature in ascending Relation of barometric changes to the state of the Weather Circulation of the Atmosphere Whirl- winds XL Evaporation Hygrometers The Dew-point Laws of Ebullition Temperature of the Boiling-point under different conditions Measurement of heights by the temperature of the Boiling-point XII Production of Sound by the vibrations of Bodies Difference between Noise and Music The Tuning- fork Theory of Vibrations Longitudinal and Transverse Vibrations Harmonicons Resem- blance and difference between Sound and Light XIII Propagation of Sound by Waves of Air and other elastic media Vibrations in Tubes Velocity of Sound Reflection of Sound Transmission by Solids and Liquids Communication of Vibrations XIV Relation between the Rate of Vibration and the Pitch of Sound The Siren Savart's Toothed Wheel Vibrations of Strings Harmonic Division of Strings The Monochord Stringed Instruments XV Vibrations of Rods Plates Membranes Relation of the Mode of Vibration to the Pitch of the Note Reed Instruments