CONTENTS. 9 



PAGB 



CHAPTER XII. SEQUEL TO THE EPOCH OF YOUNG A-ND 



FRESNEL. RECEPTION OF THE UNDULATORY THEORY... m 



CHAPTER XIII. CONFIRMATION AND EXTENSION OF THE 



UNDULATORY THEORY 118 



1. Double Refraction of Compressed Glass , 119 



2. Circular Polarization 119 



3. Elliptical Polarization in Quartz 122 



4. Differential Equations of Elliptical Polarization ' .- . 122 



5. Elliptical Polarization of Metals 123 



6. Newton's Eings by Polarized Light 124 



7. Conical Refraction 124 



8. Fringes of Shadows 125 



9. Objections to the Theory 125 



10. Dispersion, on the Undulatory Theory 126 



11. Conclusion.. 128 



BOOK X. 



HISTORY OF THERMOTICS AND ATMOLOGY. 



Introduction 137 



THERMOTICS PROPER. 



CHAPTER I. THE DOCTRINES OF CONDUCTION AND RADIATION. 



Sect. 1. Introduction of the Doctrine of Conduction 139 



Sect. 2. Radiation 142 



Sect. 3. Verification of the Doctrines of Conduction and Radiation 143 



Sect. 4. The Geological and Cosinological Application of Thermotics 144 



1. Effect of Solar Heat on the Earth 145 



2. Climate 146 



3. Temperature of the Interior of the Earth 147 



4. Heat of the Planetary Spaces 148 



Serf. 5. Correction of Newton's Law of Cooling 149 



Sect. 6. Other Laws of Phenomena with respect to Radiation 151 



Sect. 7. Fourier's Theory of Radiant Heat 152 



Sect. 8. Discovery of the Polarization of Heat 153 



