viii CONTENTS. 



CHAPTER V. 



PAOB3 



CIRCULATION AND CONVECTION IN LIQUIDS AND GASES. 



Circulation and Convection of Heat Hot- Water Heating Systems Ocean 

 Currents Convection in Gases Convection Currents in the Atmosphere 

 Winds Land and Sea Breezes Trade- Winds Water- Vapour aids Convec- 

 tion Currents Weather Forecasting in the Case of Cyclones Convection 

 in Chimneys and Hot- Air Heating Systems 53-63 



CHAPTER VI 

 QUANTITY OF HEAT. SPECIFIC HEAT. 



Quantity of Heat Unit Quantity: the Calory Specific Heat Water Equiva- 

 lent and Capacity for Heat Method of Mixtures Regnault's Determinations 

 by the Method of Mixtures Experiments on Solids On Liquids On Gases 

 Liquid Specific Heat by Mixture with known Solid Method of Cooling 

 Method of Melting Ice Bunsen's Ice Calorimeter Method of Condensing 

 Steam Joly's Steam Calorimeter Differential Steam Calorimeter Method 

 of Electric Heating Specific Heat of Water General Results Law of 

 Dnlong and Petit 64-87 



CHAPTER VII. 

 CONDUCTIVITY. 



The Passage of Heat from one Body to Another Conductivity Differs 

 enormously in different Substances General remarks on Conductivity in 

 the Three States Definition of Conductivity Diffusivity Emissivity 

 Measurements of Conductivity Peclet's Method Bar Methods of Despretz, 

 Forbes, Neumann, and Angstrom Gray's Method Berget's Experiment 

 on Mercury Experiments of Wiedemann and Franz Kundt's Experiments 

 Senarmont's Experiments on Crystals Lees's Experiments Lundquist 

 Weber Conductivity of Gases Experiments of Stefan, Kundt, and 

 Warburg 88-107 



CHAPTER VIII. 



THE FORMS OF ENERGY. CONSERVATION OF ENERGY. MECHANICAL 

 EQUIVALENT OF HEAT. FIRST LAW OF THERMODYNAMICS. 



Introductory Remarks The Various Forms of Energy The Identity of Energy 

 The Conservation or Constancy of Energy Statement of the Principle 

 Mayer's Calculation of the Mechanical Equivalent Joule's Researches 

 Later Repetition Experiments of Rowland of Miculescu of Reynolds 

 and Morby of Griffiths of Schuster and Gannon The First Law of 

 Thermodynamics 108-128 



