SUBJECTS OF THE CHAPTERS. 



PART I. HEAT. 



I. The SUN a source of heat ... 2 



II. ELECTRICITY a source of heat . 3 



Thunder and lightning . . 829 



III. CHEMICAL ACTION a source of heat . 30 



III. Combustion 86 



IV. Smoke and smoky chimneys 59 



V. Lamps and candles 74 



VI. Animal heat 83 



VII. MECHANICAL ACTION a source of heat 95 



VII. Percussion 95 



VIII. Friction 98 



VIII. Compression 102 



IX. EFFECTS OF HEAT . . . .103 



X. Expansion 103 



XI. Liquefaction 126 



XL Vaporization (clouds) .... 127 

 XII. Evaporation 156 



XIII. COMMUNICATION OF HEAT . . 164 



XIII. Conduction 164 



XIV. Absorption 184 



XV. Reflection 192 



XVI. Radiation (dew) 195 



XVII. Convection (boiling) . . 231 



