CONTENTS 



CHAPTER PAGE 



I. Science and the Properties of Matter 1 



II. Weights and Measures 7 



III. Mechanical Principles of Machines 22 



IV. Leverage "... 26 



V. Pulleys, Inclined Planes, and Wedges 35 



VI. Laws of Motion 54 



VII. Mechanics of Liquids 68 



VIII. Properties of Gases 86 



IX. Heat and Expansion 99 



X. Light, Color, and Sound 113 



XI. Principles of Chemistry 125 



XII. Acids, Alkalies, and Salts 135 



XIII. Physico-Chemical Processes 143 



XIV. The Chemistry of Common Industrial Substances 156 

 XV. Magnetism and Electricity 167 



XVI. Frictional or Static Electricity 184 



XVII. Generation of Electricity on a Commercial Basis . . 190 



XVIII. Transmission of Electrical Energy 204 



XIX. The Telephone and Telegraph 213 



XX. Science Underlying Mechanical Drawing Supplies 225 



XXI. Strength of Materials 233 



XXII. Common Fastening Agents 249 



