Calendar: 1874-1875 Page 306

01 EVENING CLASSES II Reflection of Light from Plane and Curved Surfaces The Heliostat Caustics formed by Reflection Refraction of Light Total Reflection Atmo- spheric Refraction Prisms III Measure of Indices of Refraction Lenses Compo- sition of White Light The Solar Spectrum The Oxy-hydrogen Light The Electric Light IV Spectra of Incandescent Solids Liquids and Gases Absorption of Light Constitution of the Sun and of various Fixed Stars Heat Light and Chemical Spectra Emission of Light The Origin of Colour in Bodies Optical Instruments The Eye and Vision Irra- diation VI Transformations of Radiations Phosphorescence Change produced by Heat Fluorescence Chemi- cal Effects of Light Photography VII Interference of Light Colours of Thin Plates Newton's Rings Diffraction Coloured Fringes VIII Polarization of Light by Reflection by Refract10n and by Passing throngh Crystals Norremburg's Apparatus IX Double Refraction by Iceland Spar and other Crystals Circular Polarization Fresnel's Rhomb Polarization by Liquids The Saccharimeter Effects of Heat Pressure and Magnetism in Changing the Plane of Polarization Interference of Polarized Light XI Production of Sound by the Vibrations of Bodies The Tuning-fork Theory of Vibrations Longi- tudidal and Transverse Vibrations Harmonicons